When the Douluo Continent still had the Divine Realm, its true rank was based on the Divine Realm's rank, and it was controlled by the Divine Realm. Since the disappearance of the Divine Realm, the plane had become independent. The lord of the plane then took control of the world. This was the reason why the Douluo Continent plane failed to produce any Gods.
Imagine if someone who overrode or had the same rank as the lord of a plane, who would be in control of the plane then? There would be difficulty in determining the hierarchy.
Similarly, the super divine weapon would be in the same situation.
