He needs to double his IQ, he will never be a better ninja than Itachi.
So now you have Itachi's IQ number? Can we see it please?
Also, the fact that he has been called a genius on so many times must have missed your perceptive. And let's not forget this:
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I love it how people here think that Sasuke is somehow an idiot, completely disagreeing with the author, who says it otherwise.
no.... sasuke dont have tsukyomi cant use izanagi or izanami.... 1 izanami and sasuke is finished... and itachi can seal sasuke with his susano.... even now sasuke cant touch him... and itachi saved his assss again vs kabuto....
P.S - In the end of the day .. someone will always save sasuke...
Sasuke does have Tsukiyomi, it's just not at Itachi's level. Let's not forget how he put A's jounin under a genjutsu for the whole fight, who himself was a genjutsu user. Even after his genjutsu was broken, he still couldn't move properly. Itachi is the supreme master of Genjutsu, save for Madara and Tobi who controlled Yagura - a perfect Jinchuriki - through genjutsu. Sasuke's right EMS may not be as skilled as Itachi, but he is still lethal for any non-Uchiha.
And no, Izanagi wouldn't work on an Uchiha and specially Sasuke. Where are you getting this from? How will this work on him anyway?