Board Thread:Versus Debates/@comment-27002073-20150929211023/@comment-26537507-20150930202344

But Shisui's genjutsu was especially powerful, to the point where other Uchiha with fully matured sharingan would struggle to break even the most basic one. I don't doubt that Obito can deal with Shisui's speed but if Obito gets trapped in a genjutsu for even a couple of seconds, it's all over for him.