Quote Originally Posted by chet_chetty
well kagebunshin is another thing only naruto can do since sakura & sai cannot do it (as injun pointed out).

i've pretty much accepted the fact that in those 2.5 years w/ jiraiya, "all" jiraiya taught naruto was to reach the 3rd and 4 tails, and "that jutsu". .
Kakashi said that ONLY naruto could do that training, not only naruto among his teammates.

That is not a fact. It is only your assumption. Naruto didnt 'learn' growing those tails, it just escalates the more he is consumed by the kyuubi as he uses its chakra.