" yamamoto? by a gun? he took the full brunt of a city destroying flare, and you say he will die with a GUN?, and how would WB wuake fruit work, it vibrates thing, generally you can't even am it "
I never said Yama would die by Gun BB can just wear or slow Yama down with it, WB Quake Fruit power can be channelled into weapons, WB channels it into his spear, You can aim the quakes WB does this may times, he can even grab someones head and make an earthquake init. WB can use Quake fruit in the air to make a shockwave capable of denting thick steal and crumbing a fortress.
WB used Quake fruit to tilt an Island, he used it to split an Island, he used it to create twin tsunami's which Aokiji later freezes.