Comes down to money time and return. I'm a xbox owner, but I know the PS3 has superior hardware. For me it came down to simply a choice of which controller was more comfortable. From what I have read the 360 has a great dev kit, and the PS3's is a little more difficult to work with, but they can produce amazing thing on the PS3 when the dev time is put into it. Simply it's cost and return, if it comes down to minor anti-aliasing differences or anything small, is it really worth longer development for there return? With so many games competing with each other, how can you afford to tailor to each console and maximize your game 100% on it.