A not so stealth boast 
However, the point of my post is to ask what, generally, the quality of interviewees is. I always do some prep but not always as much as I feel I should and for some of these successful interviews I've felt that my performance on the day was pretty rubbish, or at least could/should have been better.
If you interview a lot of people, what is the average standard of an interviewee? Does my small effort at prep and Ok performance make me stand out, or have I just been lucky?
It just occurred to me that maybe I could make some money offering advice, but I have no real idea what it is I've been doing right IYSWIM.