Talk:Nikana/@comment-121.54.29.103-20140410061914/@comment-69.181.54.165-20140411173945

Actually, Musashi preferred single sword over Nitoryu in duels because dual swords serve little purpose in one-on-one fighting. However, if you've read the Book of Five Rings, you'll know that Nitoryu was developed with warfare in mind; the second sword is for keeping multiple foes at bay, rather than striking a single target. He also goes into depth about training to swing a two-handed sword one-handed, but also acknowledges the reliability of the two-handed grip.

So it's not a matter of single sword being better or worse than dual swords, it's a matter of context and use. Single swords for duels, Nitoryu for open battlefields.