Eh, I agreed with you on the G2/3 combo with Roc, but there is really no differentiator here with G4. Nothing here indicates KKG is bigger than OKG, or slower. They look relatively the same size. Realize who Luffy is punching. He's not attacking 9 foot doflamingo anymore, he's fighting a 28 foot monster who's even bigger in hybrid and 200+ feet long as a dragon.
The Kanji suggests it's stronger.
The Kanji suggests it's stronger.
Over doesn't have that. It's a superior Kong Gun, not a superior KKG.
And btw "Ooozaru" from Dragon Ball is the Japanese translation of that. Same Kanji.