User blog comment:Httyd big fan/Twenty-Third Dragon Fight Club Match: Toothless vs. Sleuther/@comment-35950749-20180707062514/@comment-34902176-20180707165748

Only one problem with your theory as to why Toothless would lose...Toothless has fought Sleuther and won (This happened in RTTE! And the ONLY reason Sleuther is alive is that Toothless spared him!)