I think you guys missed the point.
Sasuke didn't want to become a ruler because he thought he was better than everybody.
He wanted to become an "evil" dictator so that he would be the target of all the hatred in the world, all the villages and shinobi would only hate him.
And because he was alone, had nothing, he would be able to bear that hatred.
With everyone only hating him, they would all become allies and live in peace.
He was inspired by Itachi, because to him Itachi was the true Hokage. He took on the Uchiha preparing to betray the leaf and killed them, then became a villain in the eyes of Konoha, only so that nobody would have to go to war and no ninja in the leaf would hate the Uchiha / Sasuke for it.