Wano was not kind to zoro fans. And then right at the end, we got massive shanks hype that stirred up even more heat and anti zoro agenda. So of course they would celebrate this massive Mihawk hype. It's honestly deserved for all the zoro fans that still stuck around and didn't lose hope.
Outside of fan made matchups with Zoro vs Marines/Admirals which would be a Strawhats fight anyways you and I both know that the cook doesn't have the sauce, unfortunately Oda's formula as always been the one guy and his best man or the 2 partners, Roger/Ray, WB/Oden, Shanks/Beckman, Luffy/Zoro, Coby/Helmeppo, Croco/Daz, Kidd/Killer, Lucci/Kaku, it's always been this way and it's going to end like this. Oda doesn't care about the others, Oda doesn't care that you want him to be strong on his own, he made him a complete fraud, Oda doesn't care that you've been begging, imploring for judge's son to have CoC, he goes and gives it to Nami who honestly deserve it less than him, that's how Oda does things.
so yonko level are essentially people who become yonkos with exception of buggy
and oden who somehow fought toe to toe with kaido, one of the five people who kaido thinks can take him on isnt that level but admiral level.......
I will try not to even question the logic you used here .
I dont think admirals and yonkos vary in levels . In each group there are individuals stronger than others
as far as mihawk is concerned , if he is in the navy he is strong enough to be an admiral
and if he wanted to as we see in this chapter also strong enough to be an emperor.