Board Thread:Naruto Discussions/@comment-26367861-20161025235033/@comment-25093611-20161027125204

QuakingStar wrote: If that was the case then Naruto would have awakened the Rinnegan the moment Hag gave him half his chakra, like Sasuke. You need the MS to get the Rinnegan.. agree, the best option that works with the shown stuff is that sasuke had indra chakra in his eyes and got ashura chakra via hashi cells,

as for why sasuke awakened his faster: my guess is that kishi didnt give a fu and if i should name a in-story reason than it would be that sasuke simply had more talent than madara (according to orochimaru)