Sigma (Archie Comics) vs Marth (Fire Emblem Heroes): who would win?

Sigma (Archie Comics) favored — Slight edge (~55%)

Sigma (Archie Comics) · Mega Man · Sigma-3

Tier

1-C

Attack Potency

Complex Multiverse Level

Speed

Immeasurable

Durability

Complex Multiverse Level

Marth (Fire Emblem Heroes) · Fire Emblem · Book I

Tier

1-C

Attack Potency

Complex Multiverse Level

Speed

Superhuman, up to Massively Hypersonic+

Durability

Complex Multiverse Level

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