See, this is what happens when you reach for nonsense that literally doesn't exist. The only similarity you noted that even begins to be valid is the fact that they both have dark rings around their eyes. Not only is that not enough for you to even think about building a case for your argument, Shukaku and other entities have these same dark rings around their eyes.It is the opposite, you have to be illiterate and blind to be persuaded that Ashura had no sort of bijuu power.
People seem to forget that Kurama was a baby when the fight Indra VS Ashura happened.
There are disturbing similarities between baby Kurama and "Ashura's avatar", do people deny them or did they forget to make the comparison?
For exemple, the black markings surrounding Baby Kurama's eyes and ears are exactly the same markings than "Ashura's avatar", in my mind, that is a good evidence that Ashura has made bloomed baby Kurama's chakra into his body, probably via ninshuu and not via the jinchuriki seal.
Furthermore Ashura's avatar has tails (it's a beast of chakra with tails) and baby Kurama has a very small snout looking like Ashura's avartar's snout...
You really have to be blind to be persuaded that Ashura didn't make bloomed baby Kurama's chakra into his body.
-Your snout comparison is absolute garbage as they look nothing alike. Ashura's Avatar has a pointed snout with nothing that'd resemble a nose like Kurama.
-Ashura's Avatar has 6 arms. Kurama has 2.
-Ashura's Avatar's head looks NOTHING like Kurama's head.
The only time Kurama and Ashura's Avatar ever gain similarities that'd make this comparison worth drawing, is when Kurama is being used by Ashura's reincarnate, Naruto. Hagoromo said Ashura's power bloomed, giving him that form. Where did he even hint that it was because of the Bijuu? Oh wait, nowhere. So nice try, but no dice pal.