Dafuq is wrong with you????????????????? Its not a rasengan goshhh , where's the rasengan in what Ashura did jusus christ you're really an idiot!!!! Its no way near a rasengan its not even a proper jutsu , at this rate you're just trying to find anything to bash the filler whether its true or not u just bash it and come up with thingsThey say that because he didn't form it with one hand but his chakra was in a rotating motion which is what Rasengan is. What he did was a Rasengan but he did it with two hands instead of one.
Because it was another attempt to make parallels, they gave him PS and chidori to parallel Sasuke and toad SM to parallel Naruto