idk lol i just assume oda wanted zoro to make a twister to get rid of the other twisters but also have him jump up and physically cut kaido...seems weird ik but i think this is the only instance where zoro used black rope and left the ground,so zoro challenges kaidos twisters and also cuts him with the blade after this kaido even recognizes enma...vs king is just black rope behaving like it always does...multiple slashes etc idk never thought to much into this tbh
plus the anime has zoro do the same thing vs kaido...create twister,fly in air,cuts kaido and then lands