DirectX 11 on the PC VS DirectX 9 on the Xbox, I don't think that it's going to be even comparable. I bought both versions of Black Ops for the PC and Xbox and the Xbox version looked like crap compared to the PC. Literally I just bought the Xbox and I thought there was something wrong with it because it looked so horrible. I had to try it out on another Xbox. Besides, a FPS is made for a mouse, the accuracy of a head shot is incomparable. I've been trying to decide which version to get but I think about Black Ops and I vote for the PC version.