Sasuke is far to emotional and inconsistant, to make a great hokage. While he generally might make better decisions about village matters such as economics, etc, he would lack the support of the village, and he would rule completely by himself. He would not be receptive to the ideas of others. Also, sasuke is not inspireing to other people.
Narutos leadership skills, have not actually been put to the test, so we dont know how good a leader he may be. Based off the fact that he is able, and chooses to take charge, it would seem he has the leadership skills to be hokage. He also has a critical skill, of being able to uplift morale, and does not go back on what he says.(being firm and strong, is another skill that is needed to be a good hokage).
Its as simple as this.
Sasuke. Not good at instilling morale. Not good at makeing wise decisions when emotional(and he is emotional frequently). When someone does something to hurt him, he seeks to crush/destroy them, instead of showing mercy, and forgiveness.
He cares more about himself than others(in a very major way). He seeks to be hokage to change the system, for his selfish reasons(to preserve what itachi, and his clan gave their lives for). Hes arrogant, and doesnt view others as equals. He values his own life more than others(besides his clan members).
He would make a terrible hokage, but a excellent right hand man, to the hokage.(or maybe even cohokage. Simply as a standalone hokage, he would be bad, but maybe if he co ruled with naruto, then he would be ok/good)
Naruto
Inspires other people. Is capable of instilling morale. Will never give up. Cares vastly about other people, even people he barely knows. Values others lives more than his own. Is receptive to others teachings. Is capable of makeing good decisions when enraged.(sasuke cannot do this) Naruto chooses to teach mercy and forgiveness. Naruto seeks to make world peace, because it is his goal in life. Naruto has the support of THE ENTIRE NINJA WORLD(literally entire ninja world...there are very few people, who do not support naruto(other than villians). A leader can do much more with the support of his people, let alone the world.
Narutos only real weakness, is makeing good decisions for the village(economically). He occasionally forgets some major details(see naruto forgetting nagato has the paths powers, and naruto forgetting that only senjutsu works against juubito)(it is possible, as naruto gets older this would fade away)
The other problem/strength, is naruto cares to much about others, and may not make hard decisions. But perhaps, it is the hard decisions, that truly lead to the cycle of hatred. So this quality, could be either very good, or bad.
Naruto would be a much better hokage overall, as he has MOST of the hokage qualities. He has a few faults, but has more than enough positives to make up for it.
The best case scenario, for the future of the village(choseing hokage) would be to either appoint naruto hokage, and have sasuke be his right hand man, or make naruto and sasuke co hokages.
The simple conclusion, is that sasuke would be terrible at being hokage(as he lacks most qualities needed to be a good one).
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