Is Gran Tursimo 4 better than Forza Motorsport

Forza Motorsport in my opinion is just a little bit better then GT 4. The physics is both games are very good with GT 4 being just slightly better. Though GT 4 does not have very many customization options unlike Forza, but Forza has no open wheeled cars. Overall both games are very fun. If you have an Xbox 360 buy Forza, but if you have a PS3 get GT 4, or even better get both if you have both systems.