Board Thread:Theories and Speculation/@comment-36157725-20180719152108

I know the obvious answer is two Rinnegan, as even stated by Madara, but what capabilities does EMS Sharingan have over the Rinnegan?

Can someone assist me in understanding?

I believe Sasuke has one of each to signify he got half of Hagoromo Ōtsutsuki's charkra, but also because his Sharingan is iconic to Sasuke, and wanted to keep both. 