Lawl, me, grasping for straws? One, I don't like either of them that much, in fact, I like Sasuke more, but not enough to look at it from a biased perspective. You ASSUME Naruto has no counters for his Chibaku Tensei, you need to understand, what you're typing, is in fact an assumption. Naruto's reaction time is leagues above Sasuke's, and the Sage trusts Naruto to win. If the Sage thinks Naruto can do it, he either knows Naruto's capabilties better than you and me, or, he's just an old fool using a teenager for a last resort in a desperate attempt to save the world. Most likely the former due to the fact he knows the abilties he gave to Naruto better than anyone. So, stop assuming please, then blame "PNJ", when things don't go your way. Just root for who you want to, and stop automatically coming to the conclusion one is stronger than the other.
Hope they both die to be honest.