Board Thread:Wiki Discussions/@comment-25343176-20141004164054/@comment-25294339-20141005014206

It is highly unlikely the very final punch of the series was the one to destroy the armour; Kurama certainly took damage himself (not only from that one moment, but from moments before too). And you are comparing the subduing of a tailed beast through pure brute force and genjutsu. They're different.

Barely conscious, Kurama had gathered enough willpower to utter out two words: Naruto, and help, and not exactly in the most stable of all speeches either.

Okay, but why wouldn't Madara just whip his genjutsu out when he had the countless chances to? Same applies for anyone really, even Kaguya. She could've used her Infinite Tsukuyomi on Team 7.