Hakkai wasnt the attack that let Zoro drain out of his energy, it was his fuking Asura. Fuking tards. Read the manga, he said that he could have gone further yet he decide to use all his remain energy in that attack after all what happen (even when you condom boy run out of hacky, zoro was fighting both Yonko, even when your conbon boy got KO, Zoro was fighting). But yeah Zoro is indeed a beast that is able to scare both Yonkos. Good luck with that condon fan.