No problem Dieselglock!
Actually it's kind of nice that Apple has partially yielded to the pressure to build PCs too. That you can run SH4 so well proves beyond a shadow of a doubt that Apple has abandoned any claim to uniqueness and just builds PCs with a few proprietary ROMs in them.
Actually you can run OSX on many PCs but, of course, Apple makes it illegal to do so with its insistence that OSX be run only on Apple hardware, which is now no different than PC hardware with a different sticker on it. Sometimes the case is pretty cool looking to make up for the rapacious price. But as you mention, Alienware does the same thing.
Since I bit the bullet and made my own PC, I'm a nuts and bolts guy. I want to be able to swap in a new motherboard, microprocessor and memory to upgrade instead of buying the whole shooting match over again. That keeps me out of the laptop and Apple markets.
If Apple was smart, they'd put the arm on the game companies to produce Apple versions. Then maybe they'd make me happy and produce Linux versions too! Once people found out that they could play the game with twice the speed on a free operating system, they'd check it out. That might put additional pressure on both Microsoft and Apple to put the customer first and quit making lightening wallets their only goal.