Dumb overgeneralization. One car is much heavier than the other, making for very different handling characteristics, and the car’s ability to use a particular compound changes. The compound of a given tire could easily be said to accent a certain car’s handling abilities. Think= heavy car on squirmy sidewall, versus lighter car…same rubber but drastically different grip levels…and thus lap times
Back on topic, the notion of using the 'Ring as the benchmark for halo cars is misleading…but it’s impractical to test multiple tracks…as one car will not be the fastest on every track. That being said, all the top manufacturers that are competing for production-car track records and silently tweaking so they can get the lowest number. There is talk that Honda’s chief engineers WILL NOT APPROVE the new NSX until it beats the 'Ring record. Considering that the first-gen NSX-R pulled a 7:55 with only 180whp means the above scenario may become reality.