i will concede that a C6 Z06 will more than likely run faster times then the GT-R...both directly off the show room floor, same drivers...i will openly admit the z06 will probably win every time...but only by a tenth or two...the Z runnings 10s is a freak...show me more then 3 doing it..you probably cant.
i enjoy these debates but only when theres something to debate..its gotten to the point now where anything said is just said to get a rise out of me, which obviously works...but alas these cars are something i'm horribly passionate about and it doesnt take much to get me going....so there you have it...
straight line flat out speed, Z06 > GT-R (only slightly)