Name lock is holding down the attack button on a character's name even after the move off screen.
AutoAim does pretty much the same thing, except you never had to have the target on-screen. Actually, I'm sure if you compared the packets that they're likely the same. Maybe I'll check into that later.
no..... doing a manual name lock forces you to stay in 1 position, AA lets u move around and fire off screen thus they arent the same