Board Thread:Naruto Discussions/@comment-28294008-20160424155402/@comment-28247797-20160525033700

@UltimaDude I think the better question is how ISN'T the Rinnegan comparable in potency to the Rinnesharingan? They're both a different variation of the same dojutsu being the Rinnegan, with the Rinnesharingan being superior. (If I did something wrong I'd admit it.) The thing is, I think the positioning of the Rinnesharingan matters. Sasuke has it in an eye, while Madara and Kaguya have it in their forehead. Madara's and Kaguya's are more powerful than Sasuke's (They both can use IT, but Sasuke can't).

But I just don't know why, is it the chakra or the positioning of the Rinnesharingan? Or the simple fact that they have more ocular prowess (Having three dojutsu while Sasuke only has two and one being EMS)? Maybe all three play a factor? But I'm certain that dual Rinnegan's are better because Obito and Sakura were whining about Madara getting his other eye and said it'd be over for them if it were to happen while Sasuke already had his RinneSharingan. So it's atleast better if the person has it in their left or right eye. Not certain about it if they have it in their forehead.