Board Thread:Lore Discussion/@comment-116.102.112.51-20161213140036/@comment-29560775-20170605152849

The Nerevanine is definetly the most effective out of them, due to being able to defeat the Tribunal and overall having powers close to a deity's power.

The Hero Of Kvatch only defeated Jyggalag with Sheogorath's power (plus, he became the Sheogorath we see in Skyrim), and as for defeating Mehrunes Dagon, that wasn't him who did it, it was Martin Septim, with Akatosh's power. I think he's probably the weakest out of them unless you count his Sheogorath powers.

The Last Dragonborn does well against Dragons (and can defeat Alduin too), mastered the Thu' um, and was able to defeat another experienced Dragonborn (Miraak), however i don't think he would be able to defeat Daedric Princes (unless you count his possible lycanthropy or vampiric powers, which even those wouldn't help him much, considering that almost every Daedric Prince he meets in-game plays him like a puppet, despite their rewards towards him). Also, seeing how he is implied to work for Hermaeus Mora (one of the weaker Daedric Princes if i remember correctly) later in his life (a period we don't see in the games, but Hermaeus Mora does say he will call him back to Apocrypha at some point), I think he just wouldn't do well against a Daedric Prince.

So, bottom line, unless the Hero of Kvatch (without Sheogorath powers) and the Last Dragonborn have the Nerevanine on their side, they're fucked.