Probably not. It's possible they'll both kill each other but most probable prediction is that Naruto will be the one to die while Sasuke bears heavy scars and "changes", because there is no way Naruto can create peace if Sasuke doesn't change. And Sasuke can't change if he's dead. Unless he changes before he dies. That could obviously happen too, but at this point, who gives a shit.
The real cause? Sasuke feels shitty he killed his best friend, decides to live according to Naruto's will. Not because he's living rightly by any means.
It's been hinted for years now they'll kill each other in the end. The toads predicted it, Itachi predicted it, heck even Naruto himself predicted it after Sasuke stabbed Karin. If it's anything different, than Kishimoto really blows at foreshadowing.