Hes right a lot of Vipers and Corvettes wouldnt come close to the little car. On a track im sure you would walk by several of them, but not all of them. I say they both have the same potential considering they can accept the same drivetrain. But the real issue here is cost. You could take either and stuff a Lingenfelter twin turbo setup and run them down to low 9's on the 1/4 mile, but i believe the solstice will win on every occasion, considering the cost of the actual car itself.
With enough money you could take either car, put some wings on it and a 50 cal turret, and mow down the competition from an aerial perspective.
T