In the three thousand parallel dimensions, there are two thousand chief deities, whose strength mostly lies at the Supreme Deity level.
Above the Supreme Deity level, there's the Absolute Deity.
However, these chief deities possess divine status. Within their respective parallel dimensions, they are almost the supreme rulers, bolstered by the power of Cosmic Entities. They can even manipulate the forces of their entire dimension at will.
Unless beings of higher power than high-tier god-kings enter their dimensions, even those with special abilities like Moros, who controls the laws of space, find themselves helpless against these chief deities.
The Thor now facing William is many times more powerful than the Thor from the "Avengers" in film and television works. He is an entity that has lived undefeated.