Gnd said;
By definition (and exam requirements) an A2 is an above average instructor. With fellow A2's along side, s/he is the average in that group (unless A1 candidate). I am proud to have 'Average A2' in my log book, this means to me an above average, 'median', QHI/QFI. Still bloody hard work and many sad hours of ground school!!!!
More than most for you, eh Gnd?
A2>= Advanced
B1< = Basic
To gain the A2 qualification, one is required to demonstrate 'Above Average' in all three parts of the examination; Mass Brief, Flying and ground school. Qed Above Average instructor. Pretty simple really.
Of course, one is only above average on the day.