I'm glad someone finally seems to get it. They compared the Z06 to the ACR to the GT350R. ACR was the undisputed king of the track, Z06 was the best "street supercar", and the GT350R was a great car, but not really even in the same class and not worth the crazy markup.
http://www.topgear.com/car-news/road-trips/corvette-z06-vs-mustang-gt350r-vs-viper-acr#1
http://www.topgear.com/car-news/road-trips/corvette-z06-vs-mustang-gt350r-vs-viper-acr#1