People think shanks is the strongest yonko but they never saw him even fighting. Yes, I'm talking about when people put their yonko power rankings and its something like 1st - shanks, 2nd - kaido .. etc.. Why shanks first when you already know that Kaido is the strongest creature alive and when it's 1v1 u bet on kaido... In my opinion, the list goes like this
1. Kaido.
2. Big Mom.
3. Blackbeard.
4. Shanks.
But you can disagree.
Big Mom, in my opinion, is one of the most underrated characters in one piece. A lot of people think she is the weakest yonko while we have only seen her get hurt by her own attack ones. She was able to defeat a 300-year-old strongest giant with one hit as a 5-year-old without her fruit and even Pirate King Roger avoided fighting her and stole her poneglyph. She even clashed with Kaido for a time and the fact she has such a strong crew might even make her the strongest if we also are talking about there crew.