But it's not more realistic at all. What'll happen is people will revolt after they find out Sasuke killed their beloved kage, and they'll never accept him as leader. They'll start to fight him to get him out, and it'll eventually end up wtih another war. The only way for Sasuke to prevent all that is to do a Madara and put them under a genjutsu of sorts.
Naruto's plans are more realistic because he understands that part of being a great leader is being loved and respected by your people, and Sasuke's plans are doing anything but. If Sasuke really wants peace, then basically inciting the people to fight him really isn't accomplishing anything. In fact, what Sasuke's doing would just bring everybody back to where we started before we started the war. Sasuke won't be unifying anyone, Sasuke won't be creating a better world for the people, Sasuke will be doing things his way, ignoring what people think of him and basically ignoring how to be a leader. Sasuke is just so irrational and blind to how the world works, and it's clear he's learned absolutely nothing over the course of the series, and it still the same character he was at the beginning.
With Naruto's plan, he's trying to work with the people and create an environment where they can thrive. The problem with Naruto is he isn't hard enough on criminals, I mean he called a psychopathic serial killer "the coolest", and he doesn't understand that the world will never be rosy and happy and perfect just because he wants it to be that way. But I'd rather have someone like Naruto leading and have others do the dirty work, than have someone like Sasuke where nobody will be happy and the world will be back in its shitty, bloody days.