Callisto vs Emerl: who would win?

Emerl favored — Slight edge (~55%)

Callisto · Saint Seiya · Base

Tier

3-C, up to LOW 2-C

Attack Potency

Galaxy Level, up to Universe Level+

Speed

Speed Of Light

Durability

Galaxy Level, up to Universe Level+

Emerl · Sonic · Ultimate Emerl

Tier

3-C

Attack Potency

Galaxy Level

Speed

Massively Ftl+

Durability

Galaxy Level, up to Complex Multiverse Level

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