Board Thread:Theories and Speculation/@comment-26636534-20150710195521/@comment-734582-20150711170454

Chaosattractor wrote: Guys, let's be calm. The sword and the mirror have one very glaring weakness: They're part of his Susanoo. You can pull people out of Susanoo.

Beyond that, they're frontal weapons. His Susanoo's back is rather wide open. He could literally have Susanoo protect his back. He can put anyone in Tsukuyoi in a glance and use the Mirror for any jutsu fired from elsewhere. He wouldn't be the most powerful ninja, but he'd be in the top 5 strongest i think.