Board Thread:Theories and Speculation/@comment-26388300-20150612203442/@comment-1251315-20150612211312

Plus, there's the fact that, early on, Kishimoto probably didn't have much regarding the jutsu. He simply wanted a jutsu that would result in Hiruzen's death, which isn't the case with Madara, because he planned to be revived: just in the wrong way than he intended.