In Froza 3, if you tune the car in details (usually as player done in the racing game), the car handling/response will not worse than the GT series.
My other favourate for the Xbox 360 is the Race Pro, this game include a complete Macau ciricuit.
wow....it seems so attractive!!
i always wonder the handling of these "american style" racing game. but after the explainations of you and other ching, i think i will go for them~