Board Thread:Naruto Discussions/@comment-1018594-20160409062530/@comment-734582-20160417114508

While i think that a fresh obito would be stronger than a fresh kakashi, at the point they fought Obito was equal to Kakashi. Also, Madara tried to control him via the Curse Seal but failed, since Obito removed that. Only when Obito was down and heavily weakened from the Juubi was Madara able to trick him, and even then only because Obito was using Rinne Tensei anyway. This also has nothing to do with stamina but rather pure willpower.

As to revelations:

Naruto tells Obito that the Hokage is someone who walks in front and clears the way, enduring whatever he comes across. When Obito asks Madara what he was to him, Madara states that he simply had Obito walk in front to clear the way. Unaware of what Obito truly intended with the question, Madara thus essentially said that Obito was his Hokage. This basically confirms to Obito that he had not abandoned his dream but indirectly had always wished to be a Hokage.