Ozai vs Gigakigan: who would win?

Gigakigan favored — Slight edge (~55%)

Ozai · Avatar: The Last Airbender · With Sozin's comet

Tier

LOW 7-C, up to 7-C

Attack Potency

Small Town Level, up to Town Level

Speed

Massively Hypersonic+

Durability

Small Town Level, up to Town Level

Gigakigan · One-Punch Man · Base

Tier

7-C

Attack Potency

Town Level

Speed

Unknown

Durability

Town Level

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