Board Thread:Versus Debates/@comment-24855929-20150705215528/@comment-5407586-20150706184450

Sarutobii2 wrote: The only dangerous thing about Shisui is Kotoamatsukami. All Kakashi has to do is use a shadow clone and trick Shisui into wasting it on the clone. Shisui being the strongest Uchiha isn't much of a title seeing as the clan was so weak they were killed by only 2 shinobi. And since Kakashi beat Obito, i'd imagine he would do the same to Shisui. The problem is, we know too little on Shisui's skills. He was renowned for his mastery over genjutsu and Body Flicker, but that's pretty much all we know aside from Kotoamatsukami.

The Uchiha clan was killed by only two shinobi, true. But these two were the strongest of the clan at the time (as Mangekyō users) and performed a surprise assault, leaving little to no time to react. And Kakashi didn't defeat Obito… Obito let Kakashi pierce his heart to destroy the fūinjutsu placed on him by Madara.