Honestly, who actually cares? The game is fundamentally the same on both consoles and PC (except for the online on the PC version).

This is just my input so don't go off and say I am a PS3 fanboy, cuz basically, I'm not. I enjoy Halo and Gears as much as the next guy. The PC version, in my opinion may look the best, but second best definitely goes to PS3 cuz of 1080p (correct me if I'm wrong but 360 can only do 720p??? I don't know, I'm not a big enough gamer to remember the specs on both consoles). I thought the 360 version was the weakest. I can't really tell you why, whether it was the shadowing or just the textures. But I personally found the PS3 version to be the best as well as play the best.