i think you're completely wrong about this being an even match up

what happens when a cannon ball hits luffy? he rebounds it back

what happens when bellamy springs like a frog against luffy? hes gonna bounce him back, slam him into a wall show him how inferior and weak his rookie ass is and then gomu gomu rocket his ass to the next sea where the shojo will salvage his worthless carcass 5 years later

the only thing bellamy will be rivaling are the rocks in the sea , who could sink the fastest?