**> **Schichbukai = Yonkou
Yonkou = Admirals
Admirals = schichbukai****
This much I completely agree with. People who think belonging to any group makes a character stronger than someone belonging to another powerful group are just being ridiculous.
The only difference imo, is the resources at thier fingertips. The Admirals have the full backing of the marines, the Yonkou have thier pirate crews and networks, and the Shichibaki have whatever dangerous individuals they have "drawn into thier influence" and unkown resources. But a Schichibaki could be stronger than an Admiral or Yonkou, an Admiral could be stronger than a Yonkou or Schichibaki, and a Yonkou could be stronger than a Schichibaki or Admiral.
More likely than not, yes, Mihawk is stronger than Shanks with the information given. But Shanks is still the more charismatic leader that can draw followers into his sphere of influence and has amassed a powerful crew as one of the four emperors, whereas Mihawk remains a lone gun whose only interest is amusing his boredom.