Anyways, the ps3 won't look better than the 360 for some time until developers get the hang of programming for it... which they will. PS2 is still the hardest to program for system in current-gen, but that didn't stop it from having the largest library by far. And of course the system with the best exclusive games is the best overall (which is why ps2 dominated last-gen), so we will just have to see. PS3 seems to have the best exclusives lined up tho (Wii notwithstanding).
Im glad im not the only one to think the ps3 side in those screenshots look better. The big differences are that things are missing, the things that remain (bridges, sky, water, vehicles) look much smoother and more detailed on the PS3 side. Perhaps things are missing because either they are timed events in the game, or that the two are not the same game (shock!).