when I got my ps3 I based my decision on the fact that God of War III was going to be a ps3 exclusive. also knowing that GT5 is coming out in the 4th quarter was a selling point for me. Its been confirmed by joystiq, and kotaku that its coming out 4th quarter FYI.
I've played the 360 and I just don't like the controlers and the way they fit in my hands, I like the feel of the ps3, and just the full package that sony offers over the 360. IMO the 360 has pretty much reached its max while devolpers have barely scratched the surface of the ps3.