Naruto represents light of day,hearth, soul, all that is good in man, Sasuke now represent darkness of night,hearth, soul, all that is evil in man and their both on a one way road to meet one another. You now have 2 totally different people compared to how both started out in life, for a time they fought each other till they stared to become friends, now they're totally opposite of each other even the way they use and show their powers. Its like an Angel VS a Demon or clash of titans as in old stories. Their fight will shake the world to its core. What do you think?