Rikudo chakra is too powerful, so powerful that we only saw Rikudo people fighting eachother, because against normal people all the fights would have been off paneled.
This is not a joke, i really mean it: Give kiba rikudo chakra and he is kage level.
Just with that you can imagine the difference between their power. And no matter how many "fodders" you add, the result would be the same, this doesn't work like science. Let me put an example:
Sasuke is a 100
Naruto and minato are 40 (both) and the gokages are 25 each one. So it is
100 vs 40+40+25+25+25+25+25+25 ... Sasuke still rapes.
I just made that example to stop this kind of threads, where you gather a lot of strong people but no matter if they're 100 of them they'll never beat someone with rikudo chakra.
EDIT: Sasuke missing a hand is a non factor, he doesn't fight using his body, he fights using his eyes. Without an arm he looses around what? 1% of his power? I guess he can create another arm with preta path anyway and still use chibaku tensei.