I dont see how you could tell whether he was an MPL or ATPL. The dont have it tattood on their forehead. An ATPL could have spent many hours time building in a 152. The MPL will have spent all his hours on positive training with lots of Jet upset training in a in a decent sim. Re cat 2/3 operations. No pilot undertakes these unless trained and approved to do so whether he has an MPL, ATPL, 20.000hrs or 200.