Hmm was this for very experienced pilots?

For newer pilots going through training, it seems like the baseline should move progressively higher with training, and so you’d want good data to know what kind of feedback accelerates that baseline improvement.

For experienced pilots who’ve sort of maxed out their inherent talent/capability, it would make sense to me that over and under performance would be somewhat random.

Anecdotally, I’ve never found feedback to be a one size fits all kind of thing. Everyone responds differently and needs something a little different from you.