[Pawel Kusmierek]

 when you put them side by side with another car, they haven't a clue as to how to take a corner a car+ width off the apex and still keep it on the track.

Oh yes. Here is an example (from PC2) when I and another guy managed to do it. Mateusz, please see how neither of us could take the optimal line. I gave the video a half-joking title, because going two abreast into Eau-Rouge/Radillon, on the first lap, along an unknown simracer, may be called bad judgment. But it worked because each of us knew how to respect the other one's space. https://www.youtube.com/watch?v=a0UMolOztnY

Or how to hit an apex but alter their exit so they still leave a car+ width on the outside. 

Very true. I lost positions and got damage in some SRS races, when guys like that exited as if I wasn't there on the outside. But later, it costed them some time off SRS when I reported them and they got suspended.