[iamthepieman]

My limited anecdata does not support this. The kids who are the best on my children's sport teams are the ones who play club sports in addition to the regular season, who go to sport camps and are on multiple teams. It's clear why they are better. They spend all their time not in class, playing or practicing.

Financially, we are at least peers to all these families that spend so much time on sports but we don't prioritize it the same way so my kids are mid level players.

Obviously genetic differences do account for some variability especially at the extremes. A 190cm sophomore is going to have an easier time on the basketball court than a 165cm kid.