Well im probably wrong but nevertheless.
This guy is weird, he got pretty well score, and hes not very precise in my opinion.
I think hes got some sort of smooth aimbot that just points out near enemy head/torso and then just spreads fire.
You can see in demo a point when hes near red base behind that sign, kills 1 guy and another is sliding on his flank, he immediately turns towards him, although in all other situations hes not aiming very well.
Well i say im not sure, you decide guys, maybe im wrong again