Board Thread:Lore Discussion/@comment-18016240-20131125000510/@comment-13446185-20140130030126

Hereticalthoughts wrote: The Assassin of Legend wrote: No, he should be a avatar/incarnation of Akatosh, in that case. Not necessarily, LDB is a dragonborn, but that doesn't make him an incarnation of Akatosh since that would mean Miraak, Talos, and every other DB before LDB was an incarnation of him, some at the same time. Gods can incarnate themselves more then once at a time, hence Hjalti, Arctus, and Wulfharth all being Shezarrines (and two of them Dragonborns).

The fact that Shor's ghost appeared to Wulfharth is enough evidence to prove that avatars are autonomous to their respective supergradients (this is also seen with Anu-Anuiel-Auriel/Padhome-Sithis-Lorkhan)