Wither Storm vs Mr. Damocles: who would win?

Mr. Damocles favored — Slight edge (~55%)

Wither Storm · Minecraft · Base

Tier

7-C, up to HIGH 3-A

Attack Potency

Town Level, up to High Universe Level

Speed

Athletic Human, up to Subsonic

Durability

Town Level, up to High Universe Level

Mr. Damocles · Miraculous · Dark Owl

Tier

7-C

Attack Potency

Town Level

Speed

Supersonic+, up to Massively Hypersonic+

Durability

Town Level

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