User blog comment:Fliu/Chapter 953: Swords and a Fox/@comment-24287735-20190823090449/@comment-108.83.222.210-20190823230951

I suspect that the skill and strength of the person and the ability to inflict damage with a particular weapon is in a reciprocal relationship in which one amplifies the other. For instance, Zoro is a swordsman who focuses on strength as opposed to speed which means that while he would be slower then say Brook, his attacks do a lot more damage if they struck. Another example would be Luffy's physical strength helping to provide more strength when combined with his haki then it would for a physically weaker individual. Clearly this is a very strong sword and given that this is Wano, I expect the Hiyori's father must have been rather strong as well. Kaido likely did some house-cleaning by killing the strong individuals who refused to serve him and Orochi. It would help to cement his reputation and ensure that no one would dare challenge him