I literally just bought the game from Steam (like a half hour ago) and it works fine on my system without any fan tweaking. After doing the fan tweaking, it does work better, but I didn't need to do it at all just to run the game.

Any other truisms you want to state? :p
Yes, if you have the exact same amount of skill with any OS, you will have the exact same difficulty in resolving your problems.
But let's compare the following:
MS: Click through the control panel at random. Run as an admin. Run in every compatibility mode imaginable.
Linux: Look through a bunch of configuration files. Make sure you know that you have to sudo occasionally. Filthy man pages. Etc
Again, for a "normal" user, it is going to be easier to fix a Windows screw-up. Obviously if you learn how to fix problems with Linux it won't be as hard, but I really doubt you believe that it takes the same amount of effort to get to that "similar level" of knowledge.

A "normal" user doesn't know how to run as admin, is scared of any icon he hasn't been explicitly told is harmless, and much less knows what a "compatibility mode" is or how to get there. Windows knowledge is more wide-spread than Linux knowledge because, well, Windows is more wide-spread than Linux. English is more wide-spread than Swedish, that doesn't make the former easier to learn for a toddler.

Very true man, I am noticing Linux needs extra steps to do the same thing. I am getting used to how directories are set up but it just seems messed up, some things go to bin while others in their own folders elsewhere. Linux has only one advantage to me so far...free.........

Then if we are going to that level of user: The option is to google.
Again, I really doubt you believe it is easier to find tech support for Linux than Windows. Especially since Linux users tend to be more "mature" and suggest that people should read the manual (more frequently than their Windows counter-parts).
Furthermore, it is easier to provide step-by-step pictures for "click this, then that, then this" as opposed to "Okay, open up a terminal. Type the following in. Replace $YOURPASSWORD with the password you selected for your admin account. Etc". And this all goes out the window when the person searching for help is told to use vim :p
Or, we can just remember that the Windows information is much more widespread.
Like I said, it takes a lot less effort to "level up" in Windows than it does in Linux. That doesn't mean Linux is not as good as Windows, just that there is a reason that people use Windows :p

And therein lies - I believe - the main reason Windows seems easier, it's easier to gather knowledge about it because it's much more abundant. As I already said, and as you seemingly agree, Windows has the advantage of being much more common - this alone makes a fair comparison very hard to do because we don't actually know how well information about either system would have spread if the userbases were of comparable size.

Wow, what a coincidence, people who make unfounded sweeping generalizations annoy the hell out of me.
We were destined not to like one another.

Nobody is comparing which one is inherently easier to use. I am saying that because Windows is more widespread (and because of the nature of how you fix problems in Windows), it is easier to use. If Linux were more widespread, maybe it would be just as easy. But it isn't right now :p

I could not in good conscience recommend Linux to anyone who is not already an experienced computer enthusiast, and even then I would suggest trying it through Wubi or a VM before committing to an install. Based on my experiences it has no repair functionality and many ostensibly simple tweaks require the terminal. For a less advanced user these are significant issues in what is otherwise a usable OS.
To be fair my dislike of the terminal originates from DOS, but while Microsoft has made good on their intention of migrating all but the most exotic functions to the GUI this doesn't seem to have happened with Linux. Instructions on how to perform even slightly advanced or uncommon tasks will commonly include the dreaded line "open a terminal window"; I found this a bit daunting, but for most computer users it would be an utterly insurmountable hurdle.
When my Ubuntu install decided to die on me--caused by merely installing all recommended updates via the update manager--I had to repair it via the terminal. Under the same circumstances Windows presents a menu of the most common recovery tricks, all of which are mostly automated; if Ubuntu had such a feature I completely missed it. A surprising number of novice users know how to access System Restore in Windows, and from Vista onwards there is also an automated self-repair process that kicks in and tries all possible steps for you. Startup repair on Linux took about the same number of steps, sure, but the learning curve was significant because no useful functions or steps are provided by the interface (since it had to be done through the unwelcoming, spartan coldness of the terminal) and none of it is automated.
I would certainly reconsider Linux if there was a distro with integrated repair functionality--whether manual or automated--and maybe even with more terminal functions shifted to a GUI, but to my knowledge no such distro exists as yet. You can talk all you like about market share unfairness and lack of familiarity among users, but when it comes down to it there are certain areas in which Linux is sorely lacking as far as user-friendliness goes.

To be fair, for the actual "average" user (the person who checks their email, listens to and pirates music and movies, etc), Linux is a perfectly viable choice. Yeah, it is hell in a handbasket to tweak stuff, but they won't be tweaking things. Hell, I use an Ubuntu-based distro on a daily basis (some software I need doesn't have a good windows version and/or I refuse to use cygwin :p) and I have never had a good reason to do anything more advanced than sudo'ing before installing something.
That being said, I also just run it through virtualbox and Windows 7 :p
Linux sucks for most people if you want to do any advanced stuff, and I do strongly believe that Windows is easier to do a lot of the more advanced stuff. But, at the end of the day, do we really even need to do that stuff? :p

Apparently GI's latest issue lists "Mac" as one of the available platforms for Portal 2:
http://kotaku.com/5487718/portal-2-coming-to-a-mac-near-you

This is final confirmation of what was heavily implied by the Mac teasers Valve sent to various media outlets. Since all of Valve's recent games use the same engine porting one game is a huge step towards porting all the others, and having all their flagship titles available in time for the Mac client launch will certainly make a persuasive argument for Mac users.

March 8, 2010 – Valve announced today it will bring Steam, Valve’s gaming service, and Source, Valve’s gaming engine, to the Mac.
Steam and Valve’s library of games including Left 4 Dead 2, Team Fortress 2, Counter-Strike, Portal, and the Half-Life series will be available in April.
“As we transition from entertainment as a product to entertainment as a service, customers and developers need open, high-quality Internet clients,” said Gabe Newell, President of Valve. “The Mac is a great platform for entertainment services.”
“Our Steam partners, who are delivering over a thousand games to 25 million Steam clients, are very excited about adding support for the Mac,” said Jason Holtman, Director of Business Development at Valve. “Steamworks for the Mac supports all of the Steamworks APIs, and we have added a new feature, called Steam Play, which allows customers who purchase the product for the Mac or Windows to play on the other platform free of charge. For example, Steam Play, in combination with the Steam Cloud, allows a gamer playing on their work PC to go home and pick up playing the same game at the same point on their home Mac. We expect most developers and publishers to take advantage of Steam Play.”
“We looked at a variety of methods to get our games onto the Mac and in the end decided to go with native versions rather than emulation,” said John Cook, Director of Steam Development. “The inclusion of WebKit into Steam, and of OpenGL into Source gives us a lot of flexibility in how we move these technologies forward. We are treating the Mac as a tier-1 platform so all of our future games will release simultaneously on Windows, Mac, and the Xbox 360. Updates for the Mac will be available simultaneously with the Windows updates. Furthermore, Mac and Windows players will be part of the same multiplayer universe, sharing servers, lobbies, and so forth. We fully support a heterogeneous mix of servers and clients. The first Mac Steam client will be the new generation currently in beta testing on Windows.”
Portal 2 will be Valve’s first simultaneous release for Mac and Windows. “Checking in code produces a PC build and Mac build at the same time, automatically, so the two platforms are perfectly in lock-step,” said Josh Weier, Portal 2 Project Lead. “We’re always playing a native version on the Mac right alongside the PC. This makes it very easy for us and for anyone using Source to do game development for the Mac.”
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I really like the Steam Play concept of not having to re-buy the game for Mac or PC if you already have it on the other platform.

Pretty impressive announcement, seems to tick all the boxes and then some.

Don't own a Mac but I'm always happy when more people can play games. I'm particularly pleased that if you own a game on Windows you own it on Mac as well.