Eragon and Saphira (Inheritance) vs. Witch King of Angmar on Nazgül

Eragon and Saphira, in their travels outside of Alegäesia, come across Middle Earth, with the Witch King of Angmar trying to rule. With no orc army around the Witch King, his only form of assistance is his Nazgül. These are both BOOK forms of the combatants. Who will win, the Rider or the Witch King? Please say why.

End of series Eragon and Saphira are incredibly powerful. And Eragon is no longer considered a man by any race. He's half human, half elf, but better than both. He's also an honorary dwarf if that counts.

Plus his magic along with Saphira's, as well as the Eldunari of all the ancient dragons pretty much puts him beyond Witch King.

Yeah, Eragon is much, much faster and stronger and would annihilate the Witch King in a magic duel. And Saphira would kick his steeds ass even if she didn't use her firebreath.

Saphira is a beast literally and figuratively in an aerial dogfight, and Witch King basically moves in super slow mo in comparison to Eragon, because Elves were blinding fast, and once he transformed, he was easily outperforming the best fighters they had.