My point being, that the Corvette ZR1, wasn't your run of the mill "normal" Vette....sure it was built in the GM factory, but was essentially a factory "suped up" vette. No different than a Mustang Cobra, still built by Ford, but far from a regular GT Mustang. So you can't really compare a ZR1 which was a Factory built suped up vette to a normal Testerossa. Would be like comparing my well used Honda CRV to a Porsche Cayanne....not really much of a comparison.

Besides? Wasn't the ZR1 supercharged? Not even a fair comparison with that. So even with all that increase in power to the ZR1, it was still only marginally faster than the Testerrosa 0-60.