Kevin Uxbridge vs Green Lantern Power Ring: who would win?

Kevin Uxbridge favored — Slight edge (~55%)

Kevin Uxbridge · Star Trek · Base

Tier
LOW 5-B
Attack Potency
Small Planet Level
Speed
Infinite
Durability
Small Planet Level

Green Lantern Power Ring · DC · Base

Tier
LOW 5-B, up to LOW 1-C
Attack Potency
Small Planet Level, up to Low Complex Multiverse Level
Speed
Massively Ftl+
Durability
Small Planet Level, up to Low Complex Multiverse Level

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