Board Thread:Naruto Discussions/@comment-30168130-20161114001449/@comment-734582-20161121114217

Kakashisologod wrote: True @UltimaDude but still naruto>obito The problem is simply that Obito as TTJ was barely holding on. Naruto on the other hand has been jinchuriki all his life and could fairly easily incorporate more.

So although Obito's potential as TTJ is much higher, he simply never managed to fulfill that. I think a similar case exists with EMS Sasuke (Potential to rival EMS madara, but turned to Rinnegan before he really developed his powers).