One Piece Big Mom Vs Akainu. 15 and Episode 786 Big Moms cape is seen clearly. Theres a clear portrayal here.
All the possible 1 on 1s are super close to debate. Akainu even with the Magma fruit will struggle to damage her. One Piece Manga and Anime Vol.
Akainu and Kizaru win high diff only because Big Mom is a monster.
Kizaru was willing to intercept Big Mom before she could meet up with Kaido not something you do unless suicidally inclined. While Aokiji was backed by Sengoku to replace him Akainu was in. One piece is the highest selling manga of all time. One Piece Manga and Anime Vol.