Board Thread:Theories and Speculation/@comment-26358288-20150630121218/@comment-5273810-20150630205538

JOA20 wrote: BlueLantern1995 wrote: Obito only had Genjutsu Sharingan. He was so good at it, it was comparable to the power of Shisui's MS special ability. This isn't the first time though as Sasuke's Genjutsu Sharingan is just as powerful as Itachi's Tsychiomi(or however you spell it). Then why didn't Obito use such a powerful genjutsu god knows how many times?

Not to mention that Sasuke has never used a genjutsu as powerful as Itachi's Tsukuyomi, as far as I recall. Indeed that is the million dollar question. Probably because he'd be invincible if he actually used it. Obito had the power to control a perfect Jinchuriki Yagura with just Genjutsu Sharingan. So the question is why not use that on the Kage at the summit or on either Killer Bee or Naruto?

Sasuke's Genjutsu prowess, I think was proven during the fight with Kabuto where Sasuke's Genjutsu was used to break Itachi out of Kabuto's Genjutsu and Itachi had to resort to Tsychiomi to break out Sasuke.

Plus everyone is making the point Itachi was holding back against Sasuke which while true does not mean that Sasuke didn't break Tsuychimoi. Its kinda like with Itachi's comment on Jiraya during Konoha Crush you can interpret it as Itachi was saying the truth or he was trying to save the lives of those he was fighting. Either interpretation could work. But, Itachi has shown the habit to readily compliment his opponents in something. So one could argue that in fact while Itachi was going to let Sasuke win he didn't let him win at that big a margin. Plus Itachi seemed surprised which if he let his brother break it, he wouldn't have. But I guess its unprovable either way.