Sometimes it helps to try different settings until you find out what works best for oneself. And a good place to start is probably by trying out some of the professionals' settings if you ask me.
You'll not necessarily play like them, but you could encounter some settings you had a better feeling with in-game.
E.g. if you're used to play without acceleration in-game and everytime you play you would end up playing a decent match, but your feeling in-game isn't that great (even though you try messing with your sensitivity etc), then it might be a whole other feeling if you try out some of the pros settings (one who uses acceleration or a different resolution, maybe even another mouse). Why shouldn't you try? - it's sometimes not all about practisering your aim or playstyle, simple changes in your settings could improve your game even though it all could be one hell of a placebo in the end.
It's not always about people who think they will play like the pro, it's sometimes just to try out settings they maybe never would've tried themselves in the first place.
+1 This is what I also do. I don't download professional player's configs just by thinking that they would make me pro myself. It's all about searching on settings which you are comfortable on. I usually just check the config files and add some commands from them to my own config what I think would suit my playing style :).
The mouse is wrong which I've declared in the comment to lucb, mixed him up with Xizt in my memory. The mousepad is the one he used at copenhagen games, and the config is from esl which very well should be as official as it gets.
I hardly believe any admins would read threw a config nowadays.. Could be wrong, but I guess it won't be taken that serious, and you (as a tournament participant) should just take it with a pinch of salt...