Board Thread:General Discussion/@comment-27920813-20160308013502/@comment-6326997-20190129050331

Pre transformation into godhood: The Last Dragonborn. Even if he and the Hero of Kvatch were equal in all the skills, the Dragonborn has shouts and the Hero does not.

Post transformation into godhood: I'm not sure. The Dragonborn has become the Champion of Hermaeus Mora, and has access to all the knowledge of that prince. Sheogorath has been defeated by mortals who've mantled him before, so he may not be as tough as people imply.