It's an interesting one. Perhaps I didn't word it too well Dave.
I heard the same comments, made here by chevvron, way back, but I can't remember where, or by whom, unfortunately.
I remember early on during our course, sitting in the airport canteen (which overlooked the apron), trying to explain to a fellow-student, who was a psychology-graduate, the difference between a Trident and a B727, both of which were parked outside. It was an interesting conversation.
My own OJTI experience didn't involve any specific problems with graduates. The hardest ones were 2 young students who simply wouldn't get stuck into the book-work. One was more concerned with TV, football and computing, the other with his new car and his girlfriend. A great shame, because both could have made it.
We also has 2 u/ts who sailed through CATC, top-marks on everything, but couldn't do it with real aeroplanes. Both ended up as first-rate ATSAs though.