I guess Steph Curry would be the equivalent of Messi, he's not freakishly tall, and even looks rather short on the court compared to all the other 7 foot tall freaks, but he's still 6'3" (~2m) and taller then 90% of people. Both were at a time considered the best at their sport.

Same probably with Messi, the genetic gifts are harder to quantify then height, but he's probably in the 90th percentile genetically of thigh strength or foot dexterity or something.

Genetics also determine fine motor skill to an extent as well. I played hockey for years and even though I put the same effort in there were just people who shot better then me. It's just harder to quantify and see but the best people at darts, bowling, golf, snooker etc. probably also possess some innate unseen advantage that puts them above the rest.