Benjamin (Final Fantasy) vs Anno Un: who would win?

Anno Un favored — Slight edge (~55%)

Benjamin (Final Fantasy) · Final Fantasy · Base

Tier
7-A
Attack Potency
Mountain Level
Speed
Average Human, up to Massively Hypersonic
Durability
Mountain Level

Anno Un · Undead Unluck · Base

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

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