I think it was a trend that Anti and I believe, Neo, are really good players who show up really "late" to compete. They spend all their time figuring out how the game works, how characters work, what characters to play, etc. With the age of the internet allowing so much information to be archived and shared, that's just a bonus for them and shortens their time. If we didn't have all of this, they probably wouldn't show up until 5 years into a game's life. That worked for Melee, but it's not going to work for Smash 4 when probably, Smash 5 is announced by then. I don't know if there's anything else about Anti that would hold him back from competing much, but I believe from what I remember hearing during a Xanadu, in the case of Neo, he doesn't compete much because of medical conditions with his hands - I think he has
trigger finger.