In his defense, watching people play in realism, most of their crosshairs shake. I know mine does because I get twitchy when I'm really really into killing 1 person. Almost everyone I watch twitches and makes their crosshair move, thats why everyone thinks people are hacking. Oh, ya. Thats not walling. Walling is being able to see through walls, and shaking is aimbot. If you're saying both you are extremely mistaken.
In your defense, the only time I actually thought of both is when hes prone in tank house. When he tried to prefire the guy rushing him with a knife, then extremely twitching. Other than that, I honestly can't see anything either.