Board Thread:Theories and Speculation/@comment-28939725-20161201164545/@comment-25122992-20161205183055

Technically, Hashi's DNA in Madara's body was also a "fake body bower", yet it proved to be crucial in awakening of this Rinnegan in the first place. And Obito had a half of his body made from this DNA. Fake or not, it plays the important role in Rinnegan awakening and control. Also, nothing implies that Nagato "reached full potential" as an Uzumaki as well (I didn't see him performing Kushina's chakra chains or possessing a hax Uzumaki regeneration like Kabuto). Both Nagato and Obito weren't Asura/Indra reincarnates, yet possessed the powers of their lineages, with Obito obtaining the lineage powers of both Indra/Asura. Madara actually stated this was the reason why Obito could control Gedo Statue without even wielding the Rinnegan.