User blog comment:Dragonking99/Who is the most powerful dragon in the dragon world ?/@comment-3117252-20140325164941/@comment-24018437-20140513124011

No he isn't. Snotlout called Hookfang that just to brag. And why is the Nightmare better then Typhoomerangs, Flightmares and Changewings? Hookfang, or any Other Nightmare, has never fought either of those. With the exception of the Changewing, who he couldn't realy fight considering he held Snotlout hostage. So Why would Nightmares be better then those three?

Though I think a Nightmare may could defeat a Changewing or Flightmare, I highly doubt he could defeat a Typhoomerang.