Aang vs Uta: who would win?

Too close to call

Aang · Avatar: The Last Airbender · Season 3

Tier
LOW 7-C, up to 5-C
Attack Potency
Small Town Level, up to Moon Level
Speed
Massively Hypersonic+
Durability
Small Town Level, up to Town Level

Uta · Tokyo Ghoul · Base

Tier
LOW 7-C
Attack Potency
Small Town Level
Speed
Sub-Relativistic
Durability
Small Town Level

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