It's funny the manga spent chapters after chapters hyping up Kaido as the most durable character in One Piece. The manga made him out to be this invincible monster who can't be hurt.
Then King enters the manga and out of know where he ends up being the most invincible person we through Kaido was.
I've been asking myself how will King survive against all Zoro attacks since he can cut and scar Kaido's? Here comes Oda with his creativity making King incredibly durable thanks to his ancient zoan (dinosaur) DF. On top of that gives him a ancient race power that allows him to either instantly heals or neglect damage making him harder to hurt and injured the Kaido.
This is the perfect opponent for Zoro. The haters are claiming he's the weakest YC1. We already saw Marco lose to him. How would Kid, Law, and Katakuri hurt him? They wouldn't. They would lose bad. There are fans even claiming WCI Luffy can beat King.
What a joke.
Stay mad haters. Stay mad.