User blog comment:12th Supernova/Chapter 815: Germ Warfare/@comment-15667295-20160204222443

I think it's clear now (about how will they deal with two Yonkos).

Luffy will go to stop the marriage and get sanji back somehow WITHOUT FIGHTING WITH BIG MOM, it could be some simple clashes but no one will get defeated in a battle while the others defeat beasts pirates, I think that both Zoro and Law will defeat Kaido (instead of Luffy who always defeats the boss), olso Zoro and Law together are surely stronger than Luffy alone, so it will be easier to defeat Kaido because if Luffy was with them he will not let anyone to fight Kaido with him.