I just finished watching the Z06 gang rape a Boxster S and a BMW M3. Okay, it wasnt a total crushing, the vette only outright won 5 of the 6 tests

... 0-60 @4.2, 1/4 12.6@113, 100-0 304ft, 60-0 105ft, skidpad 1.0g, roadcourse 1.x sec a lap faster. It did have a tie in the 600ft slalom 69.8mph to the M3. No, the M3 never even came close in any other event, and the Porsche, should have never showed up.
All in all the Z06 sent the wine and cheesers packing. Look at the state of cars today, and the american cars dominate they're respective classes. Viper ACR and Corvette Z06 rule the roost in they're class of FIA GT, as does the Saleen and Steeda Mustangs in they're respective classes. On the street it is just as brutally obvious.
If you are going to build a sports car, it had better deliver, otherwise it is a "sporty" over priced status symbol.