Lemme resummarize then...
The 2-B scaling apparently comes from Flowey being superior to Chara, who destroyed all of Undertale, consistent of many different timelines. The scaling does not make any sense, however. Flowey would be defeated by the Player, and Chara would defeat the Player at the end of the genocide route.
And whether or not this so called "Anamoly" existed, Frisk was still able to stalemate Asriel Dreemurr, who had all 6 human souls plus every monster soul. Eventually, he would also defeat Omega Flowey as well, who only had 6 human souls. But... Frisk would eventually be defeated by Chara at the end of the Genocide Route. So, Chara>Frisk>Flowey.
Its safe to say that Stats were game mechanics, and the level did not matter. Even if it did, Chara probably leveled up to a level similar of higher than Flowey's, to an unknown extent after destroying all of Undertale. Flowey pretty much states that he
killed everyone, and that is EXACTLY what Chara did when he destroyed Undertale.
As a lowball, Omega Flowey would be Low 2-C for altering the very timeline he was in, as well as creating Save States, which act like creating universes.
This means Base Asriel gets downgraded as well, to Low 2-C. Nothing ever states that Base Asriel=End of the game Chara. AoH Asriel still scales to Chara for attempting to end the world of Undertale, which is what Chara was doing.