A Swedish driver who was leavinf RC8 for MP9 this year drove the MP9 the first time at Nitromania, and directly he sait that the MP9 is way mor stable in the rear and easier to drive ... of cause i guess it can be different on different track but he was very pleased.
Then they explaned that they was changing alot more on the car between the races than with the MP9.
I´m not saying that RC8 is bad ... only try to explain the some differences.