it is ganja but why should i keep my sound on default settings if every good player use the same settings(ini tweakZOR)
back in the better days it was known that every competitive player would adjust his sound/video, it wasnt a secret, many forums explained how and where to do it.
Just because you can do it and 'everybody' did it, doesn't mean it's right.
Like I said, though, X-Fi settings give you an advantage, but it's not (at this present moment at least) considered unfair.
The graphics settings... well I don't really know much about those, never played around with them too much, but I'm pretty sure seeing someone better in the distance fog than someone else, still gives you an advantage. And again, it's probably not unfair in the sense that you wont get banned for it, but it's an advantage none the less.
if you cant keep it up with pro players then just get out of the way 
That's just silly. What you're implying is that the changes made to the game in order to gain an edge are evolving and if you don't stoop to the same level, you should just stop playing?