As
@TheAncientCenturion said it, I can see Zoro getting a PU in case with adv CoC, he need more firepower to seriously hurt King.
I also like the idea of
@Sentinel who bring up permanent hardening/barrie haki around King who get boosted by his race, remember Luffy vs Katakuri? This fight is similar, Zoro get overpowered and can´t figure out how to deal with King special power, same way as Luffy get overpowered by Katakuri and he need to learn the weakeness of Katakuri, which was his Future sight. So I can see Zoro boosting up with his own Adv CoA(Barrie haki who could legit make Zoro in future far stronger since he would have something similar like King) and adv CoC to beat King.
@Finalbeta
It seems like I won my bet, Zoro is clearly beaten around, getting dominating.
We can speak about this after the chapter come out, but prepare for new avatar for two weeks and lot of bait comments xD.