Agree with Jadugar and seeker on most levels - out of all mangas Naruto can't be rushed, but that's my main problem - they took a three year break to make the characters more powerful and it was wonderful at first.

Remember when Naruto blocked Chiyo's blows with an instant kage-bunshin? That was pretty cool and it didn't involve a new kind of power, just a better application of the existing ones.

But this Sasuke feels rushed, at least for me. Suddenly, out of the blue, he's got powers that surpass everyone's...

One more thing that put me to think - the Kyuubi told him not to kill Naruto ("You'll regret it"), why was that?
Has it been confirmed wether the demon dies if the vessel dies? I can't remember very well but the Kyuubi wouldn't allow Naruto to die if that meant his own demise.

However, Sasuke wouldn't regret killing the Kyuubi.

So what, is the Kyuubi just being a moralist and foreseeing that Sasuke will go (even more) emo with regrets if he kills Naruto or is he implying that Naruto will be useful at some point?