Admirals vs Mihawk is an interesting debate.
On one hand, the admirala have their portrayal as the strongest force of the World Government. On the other hand, Issho(and Aramaki) may be swordsmen, placing them directly below Mihawk.
Mihawk had worse feats than any admiral during Marineford, but he had incredibly good hype during the recent cross guild chapters, and he is likely Zoro's final opponent
Curious to see when Oda gives us an answer