What if the Deadra/Aedra organized a championship. Each one will have an avatar that represents what they are. (So Mehrunes Dagon as a Demon of destruction, and Hircine as a predator.) And are only allowed to corner their opponent with the power they represent, and then defeat them with physical movements.

1: Mehrunes Dagon vs Herm Mora

Who would win? Destruction or Fate?

I'd probably say Herma Mora would win every fight he is in, except maybe against Sheogorath. That crazy bastard always wins.

Fate, Herma mora owns with tentacles and knowledge.

it feels kind of pointless to argue about that , to be honest. We don't really know that much about power of Daedric prince other then the fact that they are really powefull, and when in their domains it is limitless. All that thread will bring is people coming with but Fate is obviously more powerfull then destruction, but revolution can manipulate fate and so on untill it will devolve in to popularity contest or in to a spam thread.