The Narada (in deleted scenes) took out 47 Klingon warships in a single encounter, so there's really no reason to believe that the Vengeance by itself could destroy the Narada. Like I said, there's that 120+ year technological advantage, even factoring in the tech-boost in the alt-reality which the Vengeance benefitted from.
This is also a dupe thread, just an fyi.