Same way only a conqueror should only be able to become subordinate to a better conqueror it only makes sense for a conqueror to only consider another conqueror on equal
Like kaido was allied with Doflamingo Caesar and orochi but even when working with them during to common interests he never viewed any of them as his equals. Doffy never viewed Caesar as his equal either
Even with luffy and his alliances while luffy doesnโt outright view anyone as lesser than him itโs clear that they view him as more. With Luffy pretty much doing whatever he wants. He even refused law ending the alliance because he didnโt want it to
Crocodile and mihawk outright view each other as equals and have genuine respect for each other. With them not being able to work together any other way. Both having to much pride to be seen as below the other
Anyone a conqueror views as an equal to them imo should also probably be a conqueror
If mihawk has conquerors so should crocodile Same
Same for the admirals. Canโt imagine a conqueror working under a non conqueror