Because it's the weekend and we like to do things other that sit on Gunz analysing reports which are a little more complexed than a flame/spike/f12/spam etc...
Anyways user is legit, there are mutiple of times his crosshair passes over his opponents and a shot doesn't occur, you may think he's toggling but I very much doubt anyone has the capability to toggle pre-heated battle. His aim seemed ordinary it didn't appear like he was swinging his crosshair around relying on the shotbot to hit his targets.