Ashborn vs Mimosa Vermillion: who would win?

Mimosa Vermillion favored — Slight edge (~55%)

Ashborn · Solo Leveling · Base

Tier
LOW 6-B
Attack Potency
Small Country Level
Speed
Speed Of Light
Durability
Small Country Level

Mimosa Vermillion · Black Clover · Heart Kingdom Joint Struggle Arc

Tier
6-B
Attack Potency
Country Level
Speed
Unknown
Durability
Unknown

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