User blog comment:Httyd big fan/Thirty-Fourth Dragon Fight Club Match: Toothless vs. Changewing/@comment-37154481-20190315120327

Depends really. If the Night Fury is starting the engagement then it'll be able to fire a high-power Plasma Blast first, which can do serious damage (Remember the opening scene in the first movie where one blast collapsed a catapult tower?). Don't forget their ability to divebomb, which gives them an immense advantage. However, if a Changewing attacks first, it might be able to land a hit with its acid, which could severely cripple Toothless in the battle. However, thanks to the Night Furies quick reaction time and sheer agility on the ground Toothless could maybe dodge it and save himself.

The problem is Night Furies are so insanely powerful they could take down both a Red Death and a Bewilderbeast. Granted, Hiccup did help quite a bit, but the Night Fury's intelligence would come in handy when challenging them alone. Anyhow, Night Fury all the way.