Annihilarrgh vs Marth (Fire Emblem Heroes): who would win?

Marth (Fire Emblem Heroes) favored — Favored (~65%)

Annihilarrgh · Ben 10 · Base

Tier

1-C, up to 1-B

Attack Potency

Complex Multiverse Level, up to Hyperverse Level

Speed

Immobile, up to Immeasurable

Durability

Below Average Human 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.