I guess its more of a game of who sees/fires first really. Kinda like when most people were playing half life using dial up. Man, that was sweet, savage gaming.
In TFC, I would fire a fully charged sniper shot into a guys stomach. 3-5 seconds later after I ducked for cover, they guy's body would explode.
I have another good one. One time on a 2fort server, I placed a sentry gun right at the front of the base right before lag set in, and the sentry was invisible! I got like a hundred kills that match.