Being a nuisance to a full power Yonkou is more than Katakuri could ever hope to be.
When Big mom went on her rampage Katakuri claimed that there's no way to stop her and that Whole cale island is done despite him, smoothie and Daifuku being present.
Then we come to Wano and Marco stalls Big mom just fine to a point where she has to literally run away
Marco >~ Katakuri