Sea Serpent vs Firestorm (Pre-Crisis): who would win?

Sea Serpent favored — Slight edge (~55%)

Sea Serpent · Godzilla · Base

Tier

HIGH 6-B

Attack Potency

Large Country Level

Speed

Superhuman

Durability

Large Country Level

Firestorm (Pre-Crisis) · DC · Base

Tier

HIGH 6-B

Attack Potency

Large Country Level

Speed

Supersonic, up to Massively Ftl+

Durability

City Level

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