If Amaterasu doesn't hurt Kyuubi enough to stop him from using 12 BD, then they get nuked. Any course of offense just results in them getting their asses whooped.
sasuke would solo with PS.
Why do people honestly think Full Kurama shot out 12 tbb's at once? Madara had a ps blade in every last one of those Bijuudama's which makes it immpossible. Naruto and Sasuke shits. Amaterasu plus Flash Bijuudama ends this.