I can understand opinions. But seriously dont understand the whole GT5 better thing. Unfortunately Forza 3 isnt shown to be able to compare. But seriously, look at IGN's response. The fact that Shift uses full post processing effects in game and GT5 doesnt (I think KZ2 is the first game to use it and we saw the effects there) shows how advanced graphically Shift is for a racer.
IGN say
"It's from the cockpit that the game really shines, however, with Slightly Mad Studios conjuring one of the most visceral sensations of speed we've witnessed in a game. Stick the throttle to the floor and the din of the engine becomes overbearing, all manner of post-processing effects creating an intimidating roar. The depth of field shifts as the car reaches top speed, the camera subtly moving back to mimic the driver's head being forced back by the velocity, and the hands on the in-game wheel visibly tighten - it's enough to rapidly accelerate your heart-rate.
This effect is extended to the crashes - should you have a collision the camera shakes violently with the impact, the screen blurs and in the aftermath it's possible to hear the driver's pounding heart. The result is dizzying, with the effect intended to instil a true fear of crashing - and it's a trick that really pays off. Tie in the aforementioned audio assault and some particularly violent force feedback and Need for Speed Shift makes for a truly sensational drive."
Now thats what I call next gen innovation for serious racers.
GT5
Shift
The materials are much more detailed in Shift.
