Who is better Sasuke or itachi?

Answer 1

Itachi at 13 years old submitted to a life sentence because of his duty as a shinobi. His dreams of creating a better world and for world peace by becoming a Homage was literally thrown out of the window. His remaining hope for he future was for his younger brother was to avenge their clan and freeing Itachi from his hell.

Sasuke on the other hand, never investigated or found out the real reason why Itachi did what he did. Obito has to spoon-fed it to him, and then he went to go against his elder brother's wishes and lashed out, once again, and killed the man (the complete ahole elder, Danzo). I

tachi could have killed Danzo if he wanted to, but he did not. That was how truly honourable this shinobi was compared to Sasuke.

So the answer to your question: ITACHI.

Answer 2

Sasuke may have killed Itachi, but just like Uchia Madara said that Itachi could kill him if he wanted to the only reason he let him win is to protect Sasuke from his curse mark because when they fought Itachi used his susano"o to suck the curse mark and Orochimaru out of his body. now Sasuke is going to destroy the Hidden leaf Village and kill Lady Tsunade