"You REMIND me of my son, Ashura" as in, he was already like Ashura to begin with.
This page has a lot of shit, first of all disproving your bullshit that your parent makes you awesome (which is true and applies in the real world as well). Says Naruto is the same as Ashura, didn't become awesome just because of his parents, a.k.a had to work for it. Says he REMINDS him of Ashura again.
Ashura could do nothing on his own, he had to work very hard for his power, just like Naruto. (Like the sage himself just said in the last page).
Through hardwork he was able to become as strong as Indra, just like Naruto was able to match up with Sasuke, the natural born genius Uchiha, with HARD WORK.
"Even though their BODIES were DESTROYED, their CHAKRA didn't vanish and TRANSMIGRATED over time..." "Kind of like BEING POSSESSED BY A GHOST" While Ashura stands behind them. Kind of like HAVING A GHOST LIVING IN YOUR BODY.
I don't see how Kishi can paint the image that they chose to reside in their bodies because of how they were BEFORE they made this decision, and that it didn't give them any power, that they were simply spectators. I know reading and comprehension may be hard for you, but this is basic level stuff.
tl;dr: I didn't "come up with" anything, you just can't fucking read lol.