Luffy also uses King Kong Gun against Katakuri where the attack was arguably just as effective and destructive. It might have been enough to defeat Katakuri as well if not for his advanced ...

Specifically, some of the most important members of the Charlotte family and, in turn, the Big Mom Pirates, are the strongest ...

a symbolic defeat for her. In doing so, he also crushed two of her three Sweet Generals, those being Cracker, and Katakuri.