yes, I believe Sasuke overpowered Naruto during this fight.. Or atleast if it was equal powerwise, he was able to predict well enough to make it past the rasanegan. If he made it past the rasanegan, I'm pretty sure he would have stabbed into Naruto(I don't remember if he did, if he didn't, I think this was due to something Sasuke did), if he stabbed into Naruto, he could have killed Naruto(at that close of a range, you don't think sasuke would know if he delivered a lethal blow?).
What would the manga have to do to pursuade people Sasuke changed his mind about killing Naruto? Or perhaps, was never really capable of deliverering the death blow to a friend.. Or the anime for that matter? Did either give an indication that he thought he killed Naruto? Is this even still debated?