Alright heres some more evidence that bill cipher can actually lose battles.
So auren is from a story called "I can tell you what is killing the stars." and in it there is lots more evidence and powers auren has that can help crush bill. Firstly, in part 1 in I can tell you what is killing the stars,
Auren Created a suit that allows the user to travel through multiverses. That shows he is a genius and can definitely just figure out different ways to beat bill.
Auren^
Auren has immortality type 9 before he upgrades his suit which already shows bill is gonna be destroyed, he Can keep ascending through the hierarchy if he wishes (the hierarchy of universes) and he can destroy billions of universes as well.
Auren's true form is The Absolute, a being so large whose sheer size reaches Absolute Infinity which is just C R A Z Y! he can probably squash bill like a bug. Auren is currently one of the strongest beings in ALL of fiction.
Here are some other powers of his i found:
Cloth Manipulation | All Fiction Battles Wiki | Fandom
Statistics Amplification, Teleportation, Dimensional Travel
And a bunch more.
. His suit can repair destroyed vocal cords and a broken spine (info if u click the link)
If you want more info, here it is:
Auren Da'at | All Fiction Battles Wiki | Fandom
Auren the Absolute (RV) | The Rewrittenverse Wiki | Fandom
His suit can repair destroyed vocal cords and a broken spine[