Board Thread:Versus Debates/@comment-35155071-20180330190048/@comment-9782468-20180331143907

Itachi has never shown the ability to control and maintain Susanoo from outside Susanoo, much less another dimension. I doubt he can.

@Lorenzo, the version of Itachi we saw fight Naruto and Bee wasn't any realistic version of him. The only way he'd have achieved that sort of MS mastery is by using it a lot. So in real life, if he has MS mastery, he can't see well. If he can see well, he doesn't have MS mastery. His Edo Tensei self is not "full health Itachi." Full health Itachi either has perfect vision but no MS mastery, or MS mastery and poor vision.

Also, Itachi was not "keeping up" with KCM Naruto. KCM Naruto was sparring at Itachi's pace to hear what Itachi had to say, since Itachi had control of his speech but his body was fighting on its own.