You are a clown . We got panels of when they started fighting . We have no panels of how the fights concluded . We don't know why Kaku is injured. All we know is zoro failed to damage an opponent whose weakness he already knows. Sit the hell down boy
Big words from a stupid little kid who can't read what's literally in front of him.
Yes, a major part of the Seraphim fight was off-screened, but you cannot prove that Luffy and Zoro ever used ACoC off-screen. Do you know how ridiculous it sounds, Oda off-screening Luffy and Zoro using the strongest haki technique there is?
So how about you sit your illiterate ass down and stop talking like you know what happened?