Law was speechless that Zoro could still move attack continue the plan to split Kaido from Big Mom. Not only that the moment Zoro went for Kaido (law was like this:)
Not only that, Zoro was always holding back his hacky due to Enma (he was having during all the raid in Onigashima a conflict with his blade). that make a swordman weaker King coundt be more right when he said that Zoro is getting defeated by his own blade (in a sarcastic way, cuz you dont see every day a swordsman losing cuz your blade)
Remove that 2 factors and you trully see Zoro full potential. (the flying dragon blaze didnt land also lucky dragon
) for now