How would they know? Did you even read the OP? He clearly states they know the mechanics. And wtf are you talking about dont use regular bullets. Everything short of like...icebreaker..and fusion rifles..use regular ass bullets. And the point still stands...that he was killed by them..or by rockets...you shoot a rocket at goku and he's going to laugh at you. You shoot icebreaker and goku and it's going to bounce off. You hit him with anything in the destiny universe short of a cabal warships planet destroying cannon and he's going to shrug it off