what?,kurama had nothing to do with it,naruto sucks a chakra control. Rasenshuriken requores chakra manipulation and shape transformation,not chakra control,sage mode requires high chakra level,not chakra control,rasengan is shape transformation,not chakra control.
Chakra control is a skill which allows someone to use minimum amount of chakra to bring out powerful techs,naruto uses thise techs asily bcos he can use the shroud of kurama who has immense chakra to form them. The fact that he sucks in casting or breaking genjutsu also proves it,wheras j-man could not cast,but easily break it,and could use rasengan with one arm as well.
1) tsunade
2) hiashi hyuga
3) neji
4) sakura
5) itachi