Skip, the writer of the 1Up Preview of GTA IV has recently posted on Negoaf adding a couple new lines of Information, First of all his Preview was of both builds of the game and originally didn't include the comment about the 360 controller and he has no clue why that was edited in. Secondly the problems he wrote about are pretty minimal and only very slightly noticeable. But The most important info he gave out is that the Ps3 version has Sixaxis controls for Cars, Bikes, and Choppers along with a 5 minute Mandatory Install. The R* Employs he was with also said they "think" the Ps3 version looks slightly better, but Skip says playing side by side he couldn't tell the difference and that the opinion of the R* employees he was with didn't match the opinion of all the dev-team @ R*.
OMG! I hope the sixaxis use for cars is optional. Don't scare me like that.
Interesting that the PS3 version requires an install, but whatever. No big deal. Though I'm sure the fanboys will be saying "LOL I CAN PLAY GTA4 5 MINUTES BEFORE YOU LOL!!!!!!!!!!!!" I am more curious how much space the install takes. After all, some PS3 owners only have 20 gigs, though they can at least upgrade the drive if they need to.
I wonder if the install time on the PS3 will help with texture pop-in and pedestrian/car traffic vs. the 360 version, or if it's just there to optimize the "no load screen" streaming that GTA4 uses. It's possible that the PS3's Blu-ray drive can't handle streaming as well as a DVD drive, but honestly I don't know enough to claim either way.
The worst part about GTA4's impending release is knowing that all of the "PS3 VS 360 GTA4!!!!!!!!!!!!!!111" videos are just around the corner. And knowing good ol' N4G, every single damn one will be submitted and approved.