Having actually talked to Steve Hinton about flying various warbirds the sense I got was when he said a particular warbird was "easy" (or "difficult") he meant for the average pilot who would be qualified to *start* flying it. Most of the pilots I know (including myself - lol) don't think any airplane they have flown is really particularly difficult for themselves (though they might think it would be for someone else) just varying in challenge. So that just means some airplanes need to be flown and others are easy. If Steve were talking about difficulty in terms of his skill practically no one but he would be able to fly these crates ... certainly not many of the tens of thousands of ~20 year old advanced trainee graduates we were kicking out in the early forties.

Just my thoughts.