I can confirm that the role-pm TinCow posted looks genuine.

YLC (aka Sanada Yukimura) was undoubtedly one of Lord Takeda´s swordsmen becaused he was named after a historic person who served Takeda.

http://en.wikipedia.org/wiki/Sanada_Yukimura

To me, it looks like TinCow fluked a duel victory against YLC. The write up mentions that "pure luck" played a role. So TinCows defense makes some sense.

TinCow, did you receive a bonus to your battle rating after this duel? How high is it now?