You can't tell from looking for his cursor to be jittery, and not one of those shots couldn't be pulled off legitimately, however to do that kind of thing on a consistent basis is EXTREMELY unlikely. One thing that I also don't like from the first demo is not only how he knew Shadowcat would be coming around a corner, but also that he would be crouched. Yes he did it consistently, but a player who would have to be good enough to get those kills would default their crosshair to standing head height 99% of the time. It takes one hell of a shot for me to call bs, and even though it could be legit, but I was calling bs frequently in the first demo. I couldn't watch the 2nd because I don't have the map, and I was too impatient for the 3rd, but the 1st has me veeeeery suspicious.