Board Thread:Naruto Discussions/@comment-3279282-20140421103228/@comment-945885-20140421164928

They're gaining new power, hence they are exceeding their previous power limits. The percentages are just to illustrate the point, as are Yin and Yang -- call it Mental and Physical or Indra and Asura, or however you want to define it.

If Sasuke had a lot of Yin, and now he's getting an infusion of both Yin and Yang, then he's got even more Yin than he ever had before. And the reverse is true for Naruto.

I'm just saying that the reason their powers have manifested differently from Madara is that, because they received Hagoromo's chakra instead of Indra's and Asura's, the balance of Yin and Yang is different.