From someone who road races regularly and owns a GTR both cars are not a first choice for road racing due to weight. If a person can drive and push the car a far better choice would be a C5, C6 or C7 Vette due to weight or better yet a purpose built car.
Weight kills tires and brakes!!!!!!
Not hating on either car but the reality of the real word day to day is light to light and roll racing. No contest here. The GTR Dominates in this category.
If you go road racing you will not see any Camaros and a sprinkling of GTR's. Does not mean they are not cool cars. Just means for road course does not make sense.
P.S I love both cars!!!!!!!