Jeez, can't you guys stop whining about our "whining" and leave us alone? No, really. I love Naruto, the character and the series, and therefore I make fun of it just to kill some time. It's the same as with the joke chapters - are you going to laugh or are you going to insult whomever wrote it because "OMG how can you insult the series???!!!!1"
If you pick the second, I agree with Hotsuma... you are morons.
NOW, regarding the chapter... I wonder if Naruto is in his berserk mode (think of when he beat Haku up) or if he's able to think straight. In other words,
Who's really thinking? The Kyuubi or Naruto?
On one hand, Naruto is doing some things with his chakra that shouldn't be possible on the first try. For instance, at one moment Sasuke uses his Sharingan to dodge Naruto's fist but - surprise!! a second, pure-chakra fist comes off Naruto's hand at the last moment and punches Sasuke.
Or after Sasuke shoots the fireball or whatever at Naruto, he just extends his arm and grabs Sasuke with chakra only.
So, can Naruto really do this? When did he learn it? Or maybe is instinct?
Or... is the Kyubi doing the fight? While that be interesting, I don't think that's the Kyubi fighting on his own - Sasuke would've been ripped to shreds by now (again, think Haku and the stupid amount of power there).
However, this does open some interesting points there. It'd be neat if Naruto was somehow lost inside of him and the Kyubi was the one in control - say, for instance, that the seal broke or that somehow Naruto ended up inside the cage while the Kyubi had control of his body?
I agree with whomever said before that the Kyubi wouldn't share his chakra just because he wants to keep alive... maybe in the future he'll end up asking for all of his favors back?