This is true, but some serious simmers out there might have a better chance at doing it well, perhaps better than some pilots of manned aircraft, because they would have to "un-learn" habits related to flying a real plane. Simmers are used to making an entire flight while looking at a screen, with its associated lack of depth perception. I myself have done both and I find that things like holding heading and altitude are easier in real life than on-screen. That might be because of controllers, settings, and whatnot, but I think a good, serious simmer would need minimal training, mostly in things like airspace rules, comms, and the like.
Just my US$0.02.:joystick: