Board Thread:Naruto Discussions/@comment-3279282-20140421103228/@comment-17623-20140421112726

Moving on from my question...

There was speculation that Shukaku had Magnet Release to manipulate sand at all, and that was what allowed the Kazekage to develop his own Magnet Release to manipulate the iron sand.

Of course, based on what I understand the Rinnegan makes you broken from the start and now Sasuke and Madara have one, meanwhile Naruto has all nine tailed beasts so that makes him broken.