There's nothing to compare, PS3 sucks
Nay - PS3 is an excellent machine....just these games built around the X360's GPU are not going to look as good at all on it....
Back on topic - now that I have spent some time with it on my own TV, the differences between the X360 and PS3 game feel more extreeme....
The game looks SOOOO much more 3D on the X360...on the PS3 it looks rather flat and blurry in comparisonI dont even think videos can show it well....but on 40" LCD right in yer face the differences are enough to make you wonder why they even released the PS3 game....the little things like the dust clouds dont matter as much, but the X360 version has them while the PS3 game does not...
The game looks more 3d, sharp and real on the X360...a true next gen experience...on PS3 its like mashed potatoes with gravy mixed in....
Also my friend just invited me to some games and i was able to play and have fun on the X360 game...lastnight on the PS3 i couldnt find a game and voice chat was ALWAYS screwed...studdering, or you couldnt hear anyone, or noone had a mic...