Board Thread:Versus Debates/@comment-5936871-20160126112547/@comment-10048743-20160211235643

its the light of the I.T. that actualy drags them int the genjutsu and as susanoo blocked the light of the I.T. which prevented them from being inveluped by the jutsu. also Tsukuyomi does not just affect a persons vision it effects all five seances of the person enveloped by it. its creats a world that lasts for one second but the person effected by the Jutsu feels it for however long the user wants them to. its also cast by eye contact meaning itachi just has to look nagato in the eyes to cast it. ferthermore i would say The I.T. is infearyer to the Tsukuyomi as it is a mass area effect jutsu were the regular is a single person focused attack jutsu.

also we dont know how much of the chakra nagato was using to fight naruto  was his own and how much of it was drawn out of the Demonic Statue of the Outer Path that had seven tailed beasts contained in it at the time, as Nagato is linked to the statue via the chakra reseverse imbibed in his back. also itachi does not souly rely on his genjustu ability's he fights by adapting to his opponent and that makes him much more dangerous then most any other villain in the show. also the ninja of naruto are ninja the take all advantages the can to defeat there opponent.

also itachi's chakra level is hard to judge as his illness or the medicine he was takeing to fight it could have lowered his reserves.