Re: Average crew
Oh - I agree. Commercial pilots should be (and from those I know are) very highly selected, so they all ought to be well above an "average" *pilot*...
The very very best will go on to be test pilots, and there will be many private pilots.
I don't know what proportion of pilots are military (who I presume also have a pretty high talent level), commercial, and private. I assume that the number of test pilots is sufficiently small as to be irrelevant.