Storm (Marvel Comics) vs Charybdis: who would win?

Charybdis favored — Slight edge (~55%)

Storm (Marvel Comics) · Marvel · Base

Tier

LOW 6-B, up to 1-A

Attack Potency

Small Country Level, up to Outerverse Level

Speed

Hypersonic, up to Infinite

Durability

Wall Level+, up to Outerverse Level

Charybdis · Tensei Shitara Slime Datta Ken · Base

Tier

HIGH 6-C, up to LOW 2-C

Attack Potency

Large Island Level, up to Universe Level+

Speed

Supersonic, up to Massively Hypersonic

Durability

Universe Level+

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