F
I'm ready to accept that King might be stronger but you are clearly underestimating the mochi man.
I mean, look at these two panels:
That's how two first mates of two Yonko look like.
I mean, look at these two panels:
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That's how two first mates of two Yonko look like.

Katakuri was so "unbeatable" because no one landed hits on him.
He doesn't have a good defense. Just smart with the usage of DF + FS.
King will be a monster from the looks of it.