I usually make people eat two TBR and they can't hit me mostly unless I go for three.
MG is used alot though in this age of flashlights, TBR is much safer and it's not really hard to abuse to lag time when firing the shot. I.E air time to make rocks go under you.
The delay is pretty much gone in ZERO mode so you can shoot of alot of them anyway.
I say its brainless due to the way you practically can use no skill to play this suit.