Well, I like to think persistence matters more but getting into top 1% of everything requires more than determination. 1. Going from bad to good requires x amount of effort/persistence. 2. Going from good to best requires 1000x amount of effort. When you've put 800x amount of effort, you'll realize this harsh bitter fact. You have already given up on your hobbies, family, social life, ... and you are still considered…
One can enter the top 2% of almost any field in one year, especially with the help of nootropics. It doesn't take much to cross the threshold. If not among the top 2% in such a time, then there was usually zero aptitude. Being the best or getting that much better tends to take more effort.
I can't stop myself comparing people. :D