Man, I can get the agenda but no clue how anyone can sleep on BB, Shanks, Mihawk and Akainu as being strongest fuckers in one piece (not counting IM)
They all have portrayals and feats or status for a long time and have ties with two MCs - Luffy and zoro (in case of Mihawk) which neither Kaido not BM had and aren't even fleshed out as antagonist or opponent yet.
It's naive to think oda who emphasised on them for so long would sideline them when he gave fuckin 6 years to BM and Kaido
But...but side characters will beat them...
But...but they are not strong enough