Again, you still need to do it there as well.
Big Mom was made extremely irrelevant compared to Kaido's prowess, even while being considered "equal" and they fought for days lol.
Fuji and Ryo will be moderately weaker than Akainu. Oda will hype Akainu to a ridiculous level by that point, he is the FA for a reason. Its the same way Kuzan can just operate under Blackbeard, and we all know Shanks is just broken as fuck (see what he did to Ryo)