It has lots of bugs. GTA forums has been filled with nothing but technical issues of this game, instead of the game discussions. I, for one, was lucky enough to complete the game without much issues.
Lets hope Sony gives the PS3 owners a real surprise gift by announcing Backwards Compatibility patch addon for all PS3 for a nominal fee.. I don't have any more space to hold a PS2 , and want to play some of the best PS2 games like GOW1,2 and GT4... , that I never got to play..