My thought about that is that this one driver is simply better than the others. That’s why running the same driver, on the same chassis, on the same tires and setup, is about as close as we can get.
You can’t really change a nose and say “we’re not gonna tell you what’s on the kart, just drive it” because it’s too obvious as opposed to, say, an axle. I could probably ask him what the data from the two sessions said his top speed was, though.
EDIT: I totally misread what you said there. Yes, it did help him think that he could go as fast as them, but I’m interested in what the data says as well