Anno Un vs Demonic Fan: who would win?

Demonic Fan favored — Slight edge (~55%)

Anno Un · Undead Unluck · Base

Tier
7-A
Attack Potency
Mountain Level
Speed
Hypersonic+
Durability
Unknown

Demonic Fan · One-Punch Man · Base

Tier
7-A
Attack Potency
Mountain Level
Speed
Massively Hypersonic
Durability
Unknown

A heuristic estimate from normalized VS Battles Wiki stats: tier, attack potency, speed and durability.