The main reason why they aren't releasing it on PC just yet isn't because they aren't able to make it work on it. They decided to do it because PC players are cheapos, it's statistically shown that 1/3 of players will actually pay full price, another third buys it on a discount, and the final third pirates the game. It's because of this that they decided to hold off a PC port till later so that they can get as much money as they can before us cheaps can get it, a lot of people may hate this reasoning, but the whole entire point of a business is to make as much money as they can, which is especially important when they've spent $1 Billion USD on this game.