i've got something to add to this, From my experience between playing on both, i've noticed that the PS3 lacks considerably compared to standard Laptop settings for the PC version. For 1, the enemies' animations seem choppy. For any instanced fight where there is significant enemy animations, (the first fight oudside Ul'Dah with that being the starting city) the enemy looked like it was moving at 3 FPS while compared to PC the enemy moves at a comparable animation of any non-online game.

I know the PS3 isn't as graphic intensive as most current PCs, but to be outdone by a laptop running via integrated graphics is kinda sad... at the lowest default settings mind you.

edit: I mean come on... FFXI ran better than it's pc counterpart on release being run on defaults and that one was build for PC/PS2