Board Thread:Naruto Discussions/@comment-25442710-20140920121351/@comment-24306779-20140920150615

Elveonora wrote: Maybe Hagoromo gave Naruto only his "Ashura" part of the chakra, that's the only logical explanation.

That's the point in my opinion. Naruto got Hagoromo's Yang Chakra, comprised essentially of physical energy while Sasuke got Hagoromo's Yin Chakra consisting for the most part of spiritual energy.

This statement can't be proved but i think it's a good interpretation of the facts.