Are you sure that's a GT3 Cup Car and not a regular GT3? The wing on the Cup Cars was different.
Either way, both yours and the Porsche are great cars. Which will win in a race on a track will be determined more by the driver than the car. Same driver, I'm not sure which would win if it really was a Cup Car . . .
If your point is that the Z06 is a great car, well, that point's been made here.
Always nice to see pics from the track!