Board Thread:Naruto Discussions/@comment-30381420-20161031234712/@comment-734582-20161101134441

GreatestSin wrote: i already said that it is sure that more eyes = more power, but the thing with madara getting 4 times more while other 2 times and in sasukes case it is a unknown factor, it simply seems to contradict each other in the aspect of "how much power one gets with a extra eye"... Previous users of Madara's Rinnegan did not actually own the eye. Nagato and Obito both did not use Limbo. So comparisons there are impossible. Secondly, if Madara had 2 Limbo clones with dual Rinnegan he would have no synergetic power from having both eyes. Only by having Four does he actually have greater power.

I recognize that it may seem like mathematical manipulation, but the power of one eye is 1/4th the power of two eyes, even though two eyes have double their potential. The hidden factor is the extra eye: One eye has 1/4th the power, the second eye has 1/4th the power (so together 1/2) and a factor 2 from synergy.