Sasuke by far - the only man who did everything for his brethren. The rest betrayed their own people. You cannot go any lower as a human being than this. Sasuke discarded the fetters of National Dogmas. That alone makes him head and shoulders above others. He's the best written character in the manga as well.
^ Trying to exact vengeance on Itachi and then Konoha - sounds about right.
According to Fugaku, Itachi wasn't a traitor.
According to Obito, the Konoha elders were responsible. Not Konoha as whole.
Fugaku's opinions alone mean nothing when the rest of the clan distrusted him. He did betray his clan by leaking information before the Hokage. No matter which way you slice it, Itachi was a treacherous man, who betrayed his kith and kin and murdered his own parents - and the clan - in cold blood. Nothing alters that.
And your favorite sees him as a hero. Wow.