And then it will be Beckmann/Shiliew>King>Marco>Katakuri
You need to come to tems with it.
any pirate truly above kata has coc , advanced haki : Luffy, Yonko, Ray, Oden...
What do Marco or King have?
I dont use bounty to scale people from different crews unless if both characters lack CoC, advanced , awakening
Katakuri: one of the Mightiest pirates, was said and shown as bigger threat than Linlin in wCI
King : ...
Nobody would ever have King or Marco above a Yonko in threat level or be called :Mightiest pirate