Board Thread:Naruto Discussions/@comment-1512913-20170417105433/@comment-1512913-20170418170212

So when it comes to Sharingan powers and genetic compatibility, they would be the true owners, but the Rinnegan part would be akin to Nagato's case, but considering even he could use the eyes to great extent despite not having Sharingan and the eyes not being his, I can imagine Izuna and Itachi's usage of the Rinnegan superior to even Nagato.