I saw GTA4 at my freinds house on 60 inch sony lcd tv on a ps3 and I have it at my house on a 58 inch HP plasma on 360.
There isn't any difference between the games. There is a tiny bit less pop up in the ps3 version which I assume is because of the hard drive.
I don't see any of this extra resolution/frame buffer-AA bs you people talk about...and if anyone does see the difference and is claiming one version is better than the other because of that...it may be time to re-evaluate your life.







