Nah, King and Marco are still very much comparable. Marco having/not having CoC changes nothing. He just has one of the most overpowered fruits in existence. And even if there's a difference it isn't pretty far off IMO.
Also Queen vs Marco never existed in the first place. That's like taking Queen to a slaughterhouse.
Also Queen vs Marco never existed in the first place. That's like taking Queen to a slaughterhouse.
King's durability (can Marco actually deal any lasting damage to him when even Zoro's mightiest attacks cannot), offence (consistently overpowering Zoro), mobility (he seems to have a speed advantage in his Hybrid form) and resilience/recovery/staying power(an Ancient Zoan) means that once he starts fighting seriously he wouldn't ever be on the back foot against Marco.
Marco's fruit will make it one hell of a slog, but as he did in canon, King will eventually exhaust his regeneration.
It's going to be a battle of attrition, and King will both be dealing more damage and receiving less damage than Marco. Considering that he's also an Ancient Zoan, this is not by any stretch of the imagination, a battle that Marco can hope to win.
I don't think King craps on Marco, but it seems as if he will win somewhat comfortably (little actual damage and mostly some stamina lost).