Who is the strongest person Mihawk defeated?
Daz Bones?
Why Mihawk doesn't want to fight Jozu, Vista and Crocodile?
Options:
A- He is scared
B- He doesn't want to waste his Haki and stamina and put himself in vulnerable position later (like Big mom wastes on Page1)
Use your brain its not so hard, though you said Kaido isn't stronger than Marco before so I don't have any hope for you.