Metro Man vs King Ghidorah (MonsterVerse): who would win?

Metro Man favored — Slight edge (~55%)

Metro Man · Megamind · Base

Tier

HIGH 6-C

Attack Potency

Large Island Level

Speed

Ftl

Durability

Large Island Level

King Ghidorah (MonsterVerse) · Godzilla · Base

Tier

HIGH 6-C, up to 4-B

Attack Potency

Large Island Level, up to Solar System Level

Speed

Supersonic, up to Massively Hypersonic+

Durability

Country Level+, up to Solar System Level

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