Spirit Jellyfish Aurelia vs Shen (Undead Unluck): who would win?

Too close to call

Spirit Jellyfish Aurelia · Elden Ring · +10 Spirit Ashes

Tier
7-A, up to HIGH 4-C
Attack Potency
Mountain Level, up to Large Star Level
Speed
Hypersonic+
Durability
Mountain Level, up to Large Star Level

Shen (Undead Unluck) · Undead Unluck · Base

Tier
7-A, up to HIGH 7-A
Attack Potency
Mountain Level, up to Large Mountain Level
Speed
Hypersonic+, up to Massively Hypersonic
Durability
Mountain Level, up to Large Mountain Level

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