Board Thread:Naruto Discussions/@comment-34436445-20180703141210/@comment-4080775-20180703155514

There's nothing at all that supports Sasuke's Rinnegan being more powerful that 2 Rinnegan whatsoever. The tomoe within his Rinnegan just allows him to use Sharingan and MAngekyo Sharingan techniques through it. That's it. It is no more powerful that a normal Rinnegan, just more versatile if you will. If anything, he's be at a disadvantage because he only has 1 Rinnegan to manipulate a special ability with, assuming a pair of Rinnegan could work like the the left and right Mangekyo Sharingan concerning special abilities. Even that's a stretch though, considering unique Rinnegan abilities displayed so far haven't had two different functions for a single ability.

It can be said that both eyes can work at full potential for the Rinnegan due to Madara's Limbo ability only being able to cast 1 limbo clone with eye and 4 with 2 eyes. But then again, that's just a limitation within the special ability itself rather than a secondary function altogether.