Despite all that, Oda still has character and their mom treat BM and Kaido as equals in the story. You have to either believe that Oda is intentionally writing his characters to all be retards who all suck at powerscaling because reasons, or believe that Oda’s just bad at making feats match portrayal because how much worse he’s gotten at drawing fights
Oda had fodder samurai refer to Big Mom as another Kaido. And from their perspective it is true.
Meanwhile, Kaido
(1) thought of Linlin as an invalid,
(2) called her pathetic for being thrown off of Onigashima by Kidd/Law
(3) implied pre-G5 Luffy gave him a better 1v1 fight
(4) had Future Sight
(5) Flame Bagua v. Misery comparision
Big Mom was not Kaido's equal, more like a low budget, inferior version that was given for Kidd/Law to defeat.