Gil-galad vs Ruin (Undead Unluck): who would win?

Too close to call

Gil-galad · Lord of the Rings · Base

Tier
HIGH 7-A, up to HIGH 3-A
Attack Potency
Large Mountain Level, up to High Universe Level
Speed
Supersonic+, up to Massively Ftl+
Durability
Large Mountain Level, up to High Universe Level

Ruin (Undead Unluck) · Undead Unluck · Base

Tier
HIGH 7-A
Attack Potency
Large Mountain Level
Speed
High Hypersonic
Durability
Large Mountain Level

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