Don't have a lot of questions yet, so this is still a working draft ;)
That said, one question I expect, and one that can be emotionally charged, is "Why does it say that my son/brother/nephew/kid-I-know is "below average"?
The answer is that just being in the dataset that MotoXGraphs focuses on is a compliment. It means the rider competed at the Pro, A, and/or B levels, which is something that A LOT of riders wish they could do but never quite achieve. So, being so-called "below average" within a group of the best riders in the world is actually an impressive feat.