Dovahkiin got the shouts, the Champion of Cyrodiil got Spellmaking and the Nerevarine got Levitation. I'd say it's a tie there.
Dovahkiin is the Hero of Prohecy, with the deeds of the Champion and the Nerevarine building up to this. So I'd say that Dovahkiin wins there.
Dovahkiin is blessed with the power of Talos and Akatosh, the Champion is blessed by the Nine and the Nerevarine is blessed by Azura. I think the Champion wins there.
So far, Dovahkiin 2, Champion of Cyrodiil 2 and the Nerevarine 1.
In a fight, I think Dovahkiin would win as he can shout in addition to other means so...
Dovahkiin wins.
but COC can wield a 2handed weapon AND use a spell at the same time. so its 3DOV- 3COC- 1NER.
the nerevarine is blessed with an immunity to all disease, and also because of the corprus cannot age. +2 for nerevarine.
so far, the count is 3COC- 2DOV- 3NER. any more points to be added?