Cosmic Cloud vs Jean Grey (FOX: Post-Retcon): who would win?

Too close to call

Cosmic Cloud · Star Trek · Base

Tier

5-A, up to 4-C

Attack Potency

Large Planet Level, up to Star Level

Speed

Ftl

Durability

Large Planet Level, up to Star Level

Jean Grey (FOX: Post-Retcon) · Marvel · Phoenix Force

Tier

5-A, up to HIGH 3-A

Attack Potency

Large Planet Level, up to High Universe Level

Speed

Relativistic+, up to Massively Ftl+

Durability

Large Planet Level

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