I'm exaggerating, but my general point is valid - AC is a simulator that is used by CSAI official italian racing school (with eg F1's Daniil Kvyat having graduated from there), Ferrari and Porsche. There are also many amateur track day drivers who vouch for its realism. pCars has only paid endorsements from Rene Rast and former Stig on its realism "credentials".
AC, iRacing, rFactor2 ( in no particular order; plus also LiveForSpeed, nkPro, RichardBurnsRally, Reiza's GSC) = simulated trackday experience. Forza, pCars, Codemasters F1 etc etc are also an experience, but of a different kind.