this isnt saying that bee will take down the jubbi. but the jubbi is like a thanksgivivng dinner for samehada. so how much chackra do you think bee would get if he did that? tailess tailed beast + the 8 tails?
if they really have brains samaheda would just keep eating juubis chakra while at the same time feeding it to hachibi. that way samehada wont get full and supply unli chakra to his party. biiiiiiitchh