No, but here's my assessment:
Nibali is generally not a very explosive climber, contrary to what he would like to believe. He, like Wiggins, is generally a grinder type climber who's better on longer climbs. The truth is that Wiggins has shown that he can be a far superior "grinder" (see La Vuelta). I believe that Nibali, at his best, will have a slight advantage on steeper climbs like the Angrilu, Zoncolan, etc, but that's only if he's on great form.
Nibbles may be a pretty good time trialist among climbers, but he's not on the same level as Wiggins. He can't rely on this to gain time, and if he is going to keep one losing time to Wiggins in the mountains, there's no way he could realistically beat him without several crazy descent finishes. With that said, both are lacking the climbing skills for the steepest climbs, and face an uphill battle to win any GT (pun not intended) if courses similar to the three we saw this year are repeated. On a parcours with more TT kms and less steep finishes, either could be a contender.