360 version is supposed to look better still, but actually, the PS3 version, while still inferior, looks better than the JP release, from what I've read. The Japanese release on PS3 was abysmal in visuals, and the NA release is just supposed to be a couple notches below the 360 version but still mediocre...They mitigated the crapiness in the PS3 version, but I guess it's still there. Such a pathetic outcome for a game slated for 2010 release, this is not 2006 or 2007, and when games like Dragon Age Origins can pull off better multiplat visuals on the PS3, and you have UC2 and KZ2 visuals now on the console, there is NO excuse, Sega!
Personally, I'll pass on both versions. I have a 360 now, but I'm not supporting such practices, and my back log is big enough for now. Perhaps later if a patch comes out or I change my mind next year when the game is $30 on sale, maybe, but I'm not plunking down MSRP. /rant