In a 5 v 2. Replace Big Mom and Kaido with Mihawk and Shanks they would fair much worse in this scenario as they don't have the durability to withstand a fraction of the attacks Kaido and Big Mom can.
If Zoros Tatsumaki does this to Kaido..imagine what Mihawks Tatsumaki would to to supernovas.
Also Mihawk would be to fast to be tagged unlike Kaido. He was avoid cheap shots from commander level characters and fight them without focusing on them.