Board Thread:Naruto Discussions/@comment-34436445-20180703141210/@comment-4080775-20180704024850

The Sharingan is a different dojutsu. Yeah, he can use his Sharingan techniques through his Rinnegan, but they aren't Rinnegan abilities, so its not stronger than a normal Rinnegan. Madara has his own unique Rinnegan ability as well. If we had of got an Naruto and Sasuke vs Madara fight without Kaguya appearing, its possible Madara would have shown a second Rinnegan ability as well. We don't know. But there's nothing to prove that Sasuke's Rinnegan is more powerful than Madara's, especially since he only has 1.