LMAOOOOOO
Lets play a game :
Show me where, IN THE WHOLE SERIES OF THING THAT ODA DID WRITE (that include manga, vivre card, etc), ODA PUT WHITE BEARD LESS POWERFULL THAN ANY YONKO.
I can also play too, i can show you a lot of other sources that put Whitebeard > any yonko when he was alive :)
You want it or not, Sickbeard like you do name it was in the high end of the yonko and only Shanks and MAYYYYBBEEEEE Kaido could do something.
Even with that, it was a fair and equivalent fight between Akainu and White beard , until whitebeard attacked him in the back like the pirate he is.
God Love y'all.