Shanks no diffs

Mihawk said he won't hold back his power in Marineford then he couldn't even speedblitz/ kill pre timeskip exhausted Luffy.

Couldn't even beat Vista

Croc stopped his sword swing

In the beginning jozu effortlessly blocked his slash

Marco casually ordered vista to fight Mihawk as if he isn't a big deal.

Shanks Vivre card said that he is able to stand along side with whitebeard which implies he is equal to WB.

But Mihawk said there is a gap between that man and us

That man = Old sick whiteboard Us = Warlords

So basically Old /Sick WB > warlords

Mihawk is 2nd/3rd commander level warrior. He gets mid - high diffed by YC1 level character and gets absolutely stomped by Yonko tier character.