On this one, I'm actually with poop and DBZ. Why? If Naruto were to fall there, he would most likely NOT have died, on account of the kyubi. Since that chapter, we've seen Naruto heal through some ridiculous things, of which a fall from high places is among the least impressive. Kyubi really did respond, at least in this case, to show respect for the extortion.

Where else has it been said that if the Naruto dies, the kyubi dies? I suppose there's some pretty compelling circumstancial evidence to support that theory, but at this point, I just don't see it as having to be true. Not only has no Jinchuruuki been killed while still remaining a host for a demon, but we know precious little about the methods by which the demons were sealed. Last but not least, established rules have been BLATANTLY disregarded in this manga and the behavior is increasing in frequency. I have no faith whatsoever in unestablished rules.