its entirely possible, when you consider that the other ones were just put in thier hosts with no controls whatsoever it seems. meanwhile the 4th set it up that the fox's chakra was always mixing in with his son's. If someone had decided to start training him at a younger age, he might be at the stage killerbee is now.
Naruto didnt know about the fox until he was 12.. where most of the other jinchuuriki were probably told much earlier (gaara knew about shakaku at what.. 6? and didnt really start getting full control of him until he was 13 at least)
somehow, I suspect the kyuubi knows why he was sealed in naruto (again, not only is he the most powerful, he is the smartest and most cunning of the tailed beasts), so its possible that he'll realize (if he hasnt already) that he needs to come to grips that he and naruto have to work together. if not, maybe 'bee and the 8-tails will be able to convince him