http://www.eurogamer.net/articles/digitalfoundry-grand-theft-auto-5-face-off
However, it's apparent that the PS3 version has an undeniable advantage in one area: even to the naked eye, ground textures on 360 are blurred as a result of what appears to be unoptimised asset streaming. Glitch or not, this basically amounts to concrete and grass textures appearing fuzzier beneath the feet of Trevor, Michael or Franklin, while the PS3 version's remain crystal clear. The 360 does command a minor advantage in frame-rate during synchronised play, but for shoot-outs and high-speed hurtles down the city streets, the PS3 can sometimes pull ahead in these metrics - though the difference is rarely perceptible either way. Since all else is identical across the board, the PS3 version is recommended on the grounds of image quality if you have the option.