CTS-V curb weight. 4300
Z06 curb weight. 3180
So, a 30% increase in weight vs, only a 10% increase in power. Plus the added benefits of all the HiPo suspension gearing and drive train of the Z06 makes for a fair comparison?
And the Z06 is A LS7 normally aspirated motor
While the CTS V is a LSA supercharged motor, Yes they are both Gen 4 motors, but that's about where the similarities end.
So, really when you lay it all out if they can get the numbers you predict then I certainly won't complain. All I'm saying is for what the CTSV is, to even be as close as it is to the Z06 is incredible.