They both look hot... They should both be in my collection.
They are better in different ways. No real way to tell unless you play both as gameplay is king. I know Forza 2 is extremely realistic as I have driven race cars on track a couple of times. The physics in Forza are second to none, and it looks like they have shared that info with the PGR people. GT physics looked too smooth to me (Race cars aren't that smooth ever...). But the game still looks stunning and I am sure it will play great as it is one of Sony's corner stone franchises (A GT flop is not an option).
We all know Sony uses PGR screens to advertise GT anyhow... So, in reality there isn't much difference between the two of them if the marketers don't see it!







