I thought when Jiraiya had that flashback was because he saw Kakashi and Kakashi did the same type of training as Sarutobi. LOL he was so cute when he was little. He had the same marks on his eyes as Sarutobi in the flashback. Will Sasuke turn evil?? Hmm to me animes are hard to predict but I cant see them turning him evil because Naruto is suppose to be changing his heart, at least that is what Orchi said and it scared him that Naruto would make him forget his darkness within his heart.

I still think the relationship between the 2 are going to be the same, because they are both on the same type level. Sasuke learned chidori ( i think thats how you spell the name) and Naruto learned how to summon a frog. Both learned a difficult talent so I think its still going to be the same. But this time Naruto was able to show off in front of Sasuke how powerful he truly is.