the issue controlling the difference in performance potential, or performance of the cars ,there in that video, is related more to a refined suspension, power to weight, ratio,and front to rear weight bias, how the center of mass vs the suspension works , the brakes, and the suspension and tires being able to put the power efficiently to the pavement, not a lack of horse power.
Id also point out that just about anything that you could do to the corvette's engine , would result in a bit more power coaxed from the larger displacement V10 of the viper.
both cars have decent power, but in the current configuration the vipers using and transferring the power to the pavement a couple percentage points more effectively under some conditions