Atari is promising to redress the differences between the two platforms with a new patch for the PS3 version which is supposedly available right now. According to the Atari press release, the patch will offer an "increase in resolution to match that of Xbox 360" while offering "numerous other localization fixes."
Additionally, the Trophies for the game have been fixed. A glitch – caused when players from Europe and America played with each other – prevented the "Pay Day" and "Capture All Most Wanted Ghosts" Trophies (and subsequently, the game's mandatory Platinum) from unlocking properly. If bustin' ghosts with your international pals makes you feel good, it might be time to fire up Ghostbusters again.