Again, it's not "Great" Monkey King Gun. It's "Great Ape/Large Ape" King Gun.
You're translating Great with Supreme. That's wrong. It's supposed to be "Large Ape" King Gun vs. "Monkey" King Gun.
There are no "Supreme Monkeys". That makes no sense. The "Great Monkey" refers to "King Kong".
You're translating Great with Supreme. That's wrong. It's supposed to be "Large Ape" King Gun vs. "Monkey" King Gun.
There are no "Supreme Monkeys". That makes no sense. The "Great Monkey" refers to "King Kong".
"Gomu Gomu no King Kong Gun (ゴムゴムの大猿王銃(キングコングガン) Gomu Gomu no Kingu Kongu Gan?, literally meaning "Rubber Rubber Great Monkey King Gun"): "
https://onepiece.fandom.com/wiki/Gomu_Gomu_no_Mi/Gear_Fourth_Techniques#Boundman
@ConquistadoR translation fit into it, their is no adv version for KKG like Great Ape or something.
"
Kong Gun in Japanese = 猿王銃
which is literally translated as "Monkey King Gun".
King Kong Gun in Japanese = 大猿王銃
which is literally translated as "Great Monkey King Gun".
Over Kong Gun in Japanese = 覇猿王銃
which literally translates to "Supreme Monkey King Gun". "
Supreme Monkey King Gun>Great Monkey King Gun>Monkey Gun...
The fist of Supreme Monkey King Gun was big as Great Monkey King Gun, the only different, it was fused with adv CoC and adv CoA which made it a adv version and above KKG.
Their is no other move above that, get it and accept it.
Luffy is not beating Kaido with Boundman, awakening will be the key..