Nordschleife is obviously not the most important track, LOL. I'm pretty sure you say: "How, that's the most legendary track around the world!" Yeah, it's legendary, but actually making such a long tracks and test there cars for time is stupid. It's rather not so much competition between cars, like between racers, cause at the medium track you may make a mistake once, or twice, but not much times and that doesn't influence so much as on long tracks. But exactly on long tracks you may make mistakes on corners much more, and at last you may get tired, and that may make your time worse. Cunninger "energiser" driver > better laptime, even if you had quite much worse car than not experienced racer with brilliant car - that's the rule of Nordschleife.
Just remember von Saurma in Aventador... If there was a driver just Programmed to drive in the best way, the laptime Would be guaranteed to be under 7:10, if even not less! At least I guess so... And that's for all cars!