Pegasus Seiya (Legend of Sanctuary) vs Fairy Heart: who would win?

Fairy Heart favored — Slight edge (~55%)

Pegasus Seiya (Legend of Sanctuary) · Saint Seiya · Empowered by Athena's Cosmo

Tier

LOW 2-C

Attack Potency

Galaxy Level, up to Universe Level+

Speed

Massively Ftl+

Durability

Galaxy Level, up to Universe Level+

Fairy Heart · Fairy Tail · Base

Tier

LOW 2-C

Attack Potency

Universe Level+

Speed

Unknown

Durability

Multi-Continent Level

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