edit: let me put my mind together later, don't have time. Just some gibberish I typed down in rush:
So niko doesn't have better aim, but just lower sensitivity? That s1mple would get on same level or surpass him if he decreased his sensitivity? Raw aim is your skills that makes it, not your config. Rather, lower sensitivity is a tool, that decreases error margin for accuracy mistakes. If someone could aim flawlessly on higher sensitivity, then decreasing it would serve no purpose.