The only great player in past was and still is shk. He put into this game a lot of time and mastered his movement, prediction, aim, lines, mind to outplay everything what moves. He is changing all settings for every different map. After bunch of time he put into this game, I think even if he will be inactive for long period of time, there will be nobody to be able to get on his level.
If you can watch demo of some "top players" and shk's demo, you can clearly feel the difference, that he is playing consistent. He is trying to make every jump, rush, defense, line, outplay so perfect, that it looks like it's programmed.
This is just true with facts.