It looks better in some places, the same in others. Like IGN said some places have updated textures from the higher capacity and some places have the same old textures. It's hard to notice sometimes because even the 360 game looked pretty good. The bigger difference is in the music and sound, it sounds a good deal better then in the 360 version especially if you have speakers capable of letting you see the difference between the sound encoding the 360 has to use (from space limitations) and the sound on the PS3.
It's not drastic or game altering, kind of like going from high to very high graphics and 1xAA to 4xAA on a big monitor. It's not huge but is noticeable especially if you own both and can readily compare them.
PSN ID: ChosenOne feel free to add me
