I'll take a cool 80 BTC for my GTR. And It'd likely smoke the viper. (It aint stock)
Maybe in a stoplight drag race, as AWD provides a huge advantage in that scenario...but where it matters - race track - GTR will be chasing taillights:
Let's not forget it's half the price
I have driven the new vipers though, real monster if you love RWD, but once you go all wheel...(R8, Lambo, GT-R) nothing feels the same.