Korra vs Nordom: who would win?

Nordom favored — Slight edge (~55%)

Korra · Avatar: The Last Airbender · Cosmic Korra

Tier

5-C

Attack Potency

Building Level, up to Moon Level

Speed

Sub-Relativistic

Durability

Moon Level

Nordom · Dungeons & Dragons · Endgame (Fortress of Regrets)

Tier

HIGH 6-A, up to LOW 2-C

Attack Potency

Multi-Continent Level, up to Universe Level+

Speed

Relativistic+, up to Ftl+

Durability

Multi-Continent Level, up to Universe Level+

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