Who would win in a fight to the death?
on one had you are pissed off of all the powerlevel threads and thus have more motivation
but OP is a faggot so when the battle begins OP will go straight to sucking your dick and no amount of punches will stop him
Iihiko is on another plane of existence. Nothing can hurt him except the reader.
Then why is she always in the special ranks of the power level charts?
Because the special section is for weird powers and abilities that aren't easy to quantify. Time travel falls into this space. It basically gives you the potential to do anything with enough effort and do overs, but it's inherently limited by what the wielder can do on their own.
I guess it's because she's basically outside of the normal laws of the world she's in. She's a character who basically watches from the outside and shows up as she pleases. Her power is basically having author powers.