AZB Osmium Member
I think there are different strengths that an individual might have. A very interesting book on this topic is "The Sports Gene" by David Epstein. You can get it delivered to your door for under $10.... Call it genetics or anything you want- being properly "wired' in a superior way to almost everyone else who participates is what ultimately creates the best in any sport IMO.
Many top hitters in baseball have vision around 20/10 or better. That's hard to train for.