Nut vs Superman (All Star): who would win?

Nut favored — Slight edge (~55%)

Nut · Percy Jackson · Base

Tier

6-A, up to HIGH 6-A

Attack Potency

Continent Level, up to Multi-Continent Level

Speed

Nigh-Omnipresent

Durability

Continent Level, up to Multi-Continent Level

Superman (All Star) · DC · Base

Tier

6-A, up to LOW 5-B

Attack Potency

Continent Level, up to Small Planet Level

Speed

Massively Ftl+

Durability

Continent Level, up to Small Planet Level

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