I think your vote settings are incorrect as I can only select one option instead of multiple.
Anyways
1) Mihawk is stronger than Shanks. WSS is superior to every swordsman. As simple as that. And it’s not even extreme diff. Being Shanks lvl isn’t enough to push Mihawk to his limits otherwise he’d fight Shanks. Mihawk high-extreme diffs Shanks. Stopped being a debate after the Loki flashback.
2) Shanks and it’s not even close unless you’re biased. Man is connected to every character in the verse and yet his ambitions are so enigmatic and we’ve only started to scratch the surface with all the new lore about him. Mihawk has some lore to the marines and that’s about it. He’s a plot device meant to lose to Zoro and that’s it. Unless you’re a Zoro fan then maybe you’d only be interested in Zoro related lore (which is okay! this story is ass rn so it’s understandable!) but otherwise, Shanks no diffs in terms of how interesting he is.
3) Shanks. Probably my fave character in the series apart from Kuzan although I do dislike how Oda has handled certain aspects of his character but I think he’s connecting the loose ends and for once, I trust him to write someone well. Only because Shanks is his golden boy. I hate Mihawk as a character though he’s cool. His fans haven’t helped to improve my image on him either, they’ve just made it worse. I understand if you dislike Shanks as a character though if you hate Gary Stus, it’s just I don’t. Don’t know how you can think Mihawk is even a remotely compelling character though when Oda has fucked up with him so hard. Well, he does have crazy aura so yeah whatever I guess.