Board Thread:Questions and Answers/@comment-2037710-20131106061354/@comment-622331-20141012151828

Gsimenas, don't be so quick to call something an error.

What made Kirito unique was not the fact that he could duel wield, but what he could duel wield. In the anime and in Hollow Fragment, the only weapons we ever see him duel wielding are longswords.

Maybe the the bloke from Titan's Hand had a unique skill which allowed him to duelwield axes, or maybe everyone can could duelwield axes and daggers, but most choose not to.