Naruto needs madara to tell him sasuke's weakness. So after madara's dead, they are pretty even unless sasuke awaken double jubi eyes. Then naruto needs some massive asspull or the old fashion tnj to defeat sasuke
In my own opinion, I will like naruto to die so as to bcome a legend bcos now he is a living legend with so much to talk and see. But in their fight, I tink sasuke can't bit naruto cos naruto neva fight with his physical strengths alone but also emotions which makes him a hard guy to defeat