I agree. To really be a helpful training tool as far as setting up a car goes, setups would have to be more or less transferable from the sim to real life, but apparantly that's not the case with iRacing (I can't judge for myself, I'm just going by hearsay). Luckily, I don't have to worry about that, as I'm not a racing driver, so all that's important to me is how the sim feels.
I just hope that the training tool marketing scheme is close enough to reality to not blow up in their face one day. That would hurt their credibility.
Btw, wasn't there some talk about Kaemmer working on "new" tyre physics? Where did I read that?