Moose, you didn't know either until I told you

Unlagged makes everything easier, people easily hit the edges of the hit box, which makes it seem that hit boxes are bigger.
Lagged on the otherhand makes it hard to aim, to more ping you have, the more you have to "predict." Giving the illusion of a smaller hitbox, when its really the shots and the skill involved.
That's why Old is good on lagged, cause they really don't have to aim according to lagged, unlike us. (+ we beat them aimbotting so gg)