C of G
I think Arm out the Window has got a good point when he says that you don't really know how your mates are doing...you just hear their crewroom bragging.
I remember going through an airbase somewhere near Sleaford many moons ago and wondering at why on earth X or Y, seemingly our Course aces, could be chopped. Several years later I returned to the same base as a QFI and some of the Spec Aircrew QFIs were still there.....so after a few Friday night beers in the crewroom (remember them?) questions were asked about X and Y and guess what....they were nowhere near as good as they had led us, their mates, to believe.