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- Mar 12, 2014
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Itachi implanted Amaterasu into him, and Sasuke borrowed his eyes. -_-
Itachi implanted Tenshafuin: Amaterasu. That doesn't have to do with the Jutsu of Sasukes own Mangekyo. And Sasuke took almost useless eyes and awoke a new light. The eMS doesn't arouse in just anybody. Itachi mentioned that.
By your logic Obito would use more "borrowed powers" than Sasuke.