It's possible that he is legit, actually. Just extremely skilled. That's not near enough proof to say if it is hacks or not. My friend is a PvP God, and yes, he sometimes does that. His Ping is 30 so it's not his internet, it really is possible for someone to do that in some occasions, it's not impossible, but there also is a possibility that it might be hacks. Still though, that's not enough proof for me.