Board Thread:Theories and Speculation/@comment-34277398-20180522015234/@comment-6769189-20180526040044

@killman: Obito doing something that only Madara can do actually highly implies that Obito is similar if not equal to Madara in strength or skill since no one weaker has been able to pull off even a similar feat.

@lorenzo: No. Obito extracted Kurama and had plenty of time to create a new contract if he wanted to.