Wow, a lot of people seem to think this would be a stomp:
My personal opinion would be that it would be a draw or Drath Nox wins (channeling the spirits' power):
Wrath would have an edge as a duelist, but not as much as you'd think, Nox is also a master with the blade, likely enough to provide Wrath with a worthy challenge. Do not forget that Nox, when he was an apprentice, was able to defeat a Sith Lord in a duel after being *stripped of the force* and the same Sith Lord still had access to augmentation (every sith and jedi used it to some degree, so you can't argue that he was different, especially when he was already a cheater). One should also take note that this Lord claimed to have killed "better sith", "better" suggesting higher rank, but that's my headcanon, This was done at the weakest point in his life. It is also stated that the Inquisitor (which is Nox) is just as skilled with the lightsaber as he is powerful and that anyone that is "foolish enough" to engage him will be cut down. He had bested Thanaton by the end of the story, only using the ghosts at the end to completely dominate him. And for those who say that the council found Thanaton unworthy, only one member of the council found him unworthy, where it is shown that two others did. And now let'ss talk about the ghost: not only does this make him significantly more powerful than he already is, but it can bring him back from the dead and if Thanaton is any indication, if you fail the first time, Nox will return with a vengeance. The reason why my argument is 98% Nox is because a lot of people are tlking like Wrath would stomp him, I think it's a least a draw, and if Nox channels the 4 spirits + the Voss, unless Wrath can find a way to channel Vitiate, he will die.