How aren't you double scoping in that sniper video? I'd 100x times rather "teleport" by skipping around slightly on a map rather than be forced to double scope. That's probably why people say your lag helps you, just like when I'm on gunner aiming at you only for you to lag somewhere else. I lose a bunch of damage and then by the time I re-adjust you're lagging to somewhere else. the first video is dumb because it's a pub match, and I've experienced that a few times before in pubs, or when james tried to host the WTS vs H&S match.
I was sooooo surprised I only 1x scoped. I can play 200 more games and never single scope. Just lucky I guess in that one game