How do you complete with somebody who is made of "Ashura's chakra" + "Six path - yang" + "Kumara's chakra" + the ability to gather more energy?
Sasuke is just made of "Indra's chakra" + "Six path - yin"
Soooo really comparing the two is just stupid. A mistake that Kishi made in the manga by giving Naruto all that power!
There was no reason to use ems. I mean it doesn't enhance precognition, does it?
I don't think so. Honestly at this point, I don't see the purpose of EMS beside restoring light to the user. I mean, yeah you get the ability to use amaterasu, but sasuke didn't have the ems on when he mixed it with his lightning in this movie.
Then susanoo....Madara showed that you don't even need your eyes for susanoo. You just need the double MS just to "open" the door to allow the user to use susanoo.
I don't I guess EMS just strengthen the control of your spiritual energy.