Board Thread:Naruto Discussions/@comment-3568954-20140613140908/@comment-3568954-20140613162547

Elveonora wrote: Madara absorbed the remainder of the Shinju that Obito had released to cast IF. Raikage has chakra levels akin to Tailed Beast, but his chakra isn't as powerful as that of a Tailed Beast. Again, the amount doesn't matter. As long as the Shinju has even 1/100 of everyone's chakra, the chakra will be the same powerful as if it had all of it.

if his chakra was not as powerful as the tailed beasts then raikage would not be able to over power the 8 tails