Of course there is really one big problem. You couldn't race the Challenger and the Camaro, because .. well.. you can't get a Camaro. It is kind of amusing about this whole "contest"; how can a car that you can't buy even be in the race?
It's really going to come down to a Ford, Dodge and Chevy popularity contest. It has nothing to do with the cars. Dodge is and always will be a smaller selling car. That is why old Challengers and 'Cudas sell for so much more than Camaros and Mustangs.