I'm not sure about Leagues rating system but I would definitely believe that the top echelon in most serious sports/games is reserved for people who are both more talented and also hardcore practice.
I play chess and the GM level is above the skill cap of some talented people who have put in dedicated practice since a child and are a full time professional dedicated player as an adult. The median talent at full time dedication for their whole life wouldn't reach that level, and no one who only started the game at age 20 has ever reached that level regardless of natural talent. Some of the most famous players never attain that level, including some full time professional players that are known figures today (like Eric Rosen) and historical chess theory leaders (like Jeremy Silman).
And in practice "just" GM level isn't even good enough to be a top tier player: the top 100 players can trounce the lowest GMs.
I would assume the same applies to any other game/sport that has the cache for people to train at it from childhood like Tennis, Basketball, etc.
I play chess and the GM level is above the skill cap of some talented people who have put in dedicated practice since a child and are a full time professional dedicated player as an adult. The median talent at full time dedication for their whole life wouldn't reach that level, and no one who only started the game at age 20 has ever reached that level regardless of natural talent. Some of the most famous players never attain that level, including some full time professional players that are known figures today (like Eric Rosen) and historical chess theory leaders (like Jeremy Silman).
And in practice "just" GM level isn't even good enough to be a top tier player: the top 100 players can trounce the lowest GMs.
I would assume the same applies to any other game/sport that has the cache for people to train at it from childhood like Tennis, Basketball, etc.