This could be because of various reasons.When Obito turned into the Juubi jinchuriki, he lost his mind for a while, until he managed to take over the Juubi.
But Madara was instantly in charge. How's that?
He may be a good fighter but his actions show his to be just that hence his plot thread simply being "this world caused me pain so im going to destroy everything and everyone." , he has the maturity and mentality of my 5 year old niece she also throws tantrums when she doesn't get her way.Madara ain't a punk ass *****.
There are mainly two reasons.When Obito turned into the Juubi jinchuriki, he lost his mind for a while, until he managed to take over the Juubi.
But Madara was instantly in charge. How's that?