I actually made a mistake in my original post, 90s tires only had 10% wear, so these tires seemed to come very close to "passing" the test. Back when I was a weathly man and could afford iR, I would do line-lockers at the end of pit lane in the Mx-5. So definitely in this respect iR is "correct", but again none of this is to say that anything here is fake. I found another video with a Cobra pushing the front end at various times in this rather ugly burn out session (at the very beggining and at 40 sec). The surface looks pretty rubbered in. Here is a clip though of a Cobra doing a text book perfect one with no front tire push at all (40 sec again).