i don't they're going to end it with shippuden.sasuke can't just return when orochimaru dies because he'll look like traitor,i think they're going to build a story to make sasuke look like a hero when he returns
DBZ is way better than naruto when the fights are compared but comedy in naruto is better than dbz's.there weren't any episodes which weren't good in dbz but naruto,it gets a bit boring after jiraya leaves to spy on the akatski