I think you are totally missing my point. The whole point I am trying to make centers on the fact that the coins are all actually equal. The observed difference in performance is entirely due to chance.

While, of course, human performance is not always equal in the same way our coins are, the fact that performance (or whatever it is you are measuring) will still regress towards the mean still holds true. The coin example just gives an extremely obvious demonstration about what is happening when things regress towards the mean.

https://en.wikipedia.org/wiki/Regression_toward_the_mean