Power to weight ratio and drive train loss it just doesn't add up. That Z is probably barely making 300WHP. My friends TT with the JDM swap, reflash ECU, 15psi, full catback, intakes and some other stuff put down 346WHP. That honda I hope is making somewhere around 210WHP at least.

Guessing the Z weights 3400lbs/300whp=11.3lbs per 1WHP while the Honda is around 2400lbs/210=11.4lbs per 1WHP. With the math seems like the honda would lose but then again that honda is probably making more power or that Z is making less. Good run after all.