Board Thread:Naruto Discussions/@comment-25498052-20141004162612/@comment-25272406-20141110235315

Well they fought on par with an incomplete TT-Madara and if they would have had to fight a complete TT-Madara (instead of Kaguya). I'm sure they also would have won that fight.

Well to extract the Bijuus out of Obito they had to win their technique-clash. So Naruto's and Sasuke's swordattack was stronger than Juubito's sword attack (I don't count the Rasengans because they were only used to destroy Juubito's shield) So their sheer firepower was stronger than Juubito's sheer firepower (at least in this situation)