Board Thread:Theories and Speculation/@comment-4688597-20150529212008/@comment-4688597-20150531215321

I am pretty sure Sasuke said he had much better control after learning how to use it vs madara /kaguya. I agree they they are close in terms of strength. However, as you said, it was a tie in the end, yet Sasuke had to resort to absorbing Biju chakra while Naruto had already lost a great deal of chakra in his previous fights (he has been fighting almost continuously for days now. This fight started with the encounter with Six Paths of Obito. He then fought six tailed beasts, Obito, Madara, Ten Tails, Juubito, Juubi-madara and Kaguya while spamming massive amounts of his own, Kurama's and natural chakra while Sasuke was fairly modest in his use, focusing mostly on Susanoo. )

Therefore, since they were equals in that fight, remove the control of 9 tailed beasts and Naruto > Sasuke. Naruto already lost (use of) his Biju chakra and Truth Balls. Later he posses the other half of Kurama. So in the end, Naruto is stronger than Sasuke. Sasuke being able to absorb the chakra of the Bijuu is a Rinnegan ability, which falls under his power. Everytging Naruto did in that fight was because he had a full reserve at this point. Naruto still had three of his TSB when they shot their strongest attacks, if you look closely. Also, Sasuke would be exhausted too. When he came to the battlefield, Naruto had been healed up by Sakura and was at full power, like Sasuke. So from that point, they both fought for that entire time. Yin-Kurama stated that Sasuke's Rinnegan being new restricted some of his abilities. Hagoromo also stated before their battle that he split his power between them evenly in the hopes that one wouldn't get jealous. So at the time of their final battle, they were both at the same level of energy. So while Naruto may be slightly stronger, its probably a case of Hashirama and Madada: they were even, but Hashirama fought for something that gave him a drive powerful enough to beat Madara. That, and he saw that his sharingan was weakened from exhaustion and took advantage. Needless to say, Naruto gave his all in that fight. I dont think he could curbstomp Sasuke. Before he used the Bijuu chakra, they kept canceling each other out, then Sasuke got the edge. So the outcome of an all out death match between these two would most likely end like their first battle, but with Naruto walking away heavily injured and Sasuke unconscious

Edit: The fact that Naruto ended up in the same state as Sasuke and gave it his all just to even out with Sasuke shows that they're equal. If Naruto was stronger, he would've been able to stand or be ahead of Sasuke in that way, but he was on the floor with one arm about to die of blood loss just like Sasuke