Not sure that I see anything out of the ordinary.
If you happen to see him again in game, would you mind spectating if you feel there's something off?
Thanks!
Based on these stats, I didn't see anything. He has a lot more red at one point but he's primarily playing TDM. The guns he uses mostly are snipers so counter sniping is extremely probable.
Like I said, if you can, please capture footage to take this any further.