Godzilla Earth vs Valentine: who would win?

Valentine favored — Slight edge (~55%)

Godzilla Earth · Godzilla · 22,048 Form

Tier

HIGH 5-A, up to 4-B

Attack Potency

Brown Dwarf Level, up to Solar System Level

Speed

Superhuman, up to Relativistic+

Durability

Brown Dwarf Level, up to Solar System Level

Valentine · Guilty Gear · Base

Tier

HIGH 5-A

Attack Potency

Brown Dwarf Level

Speed

Relativistic+

Durability

Brown Dwarf Level

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