Pharaohmon vs Veronica: who would win?

Pharaohmon favored — Slight edge (~55%)

Pharaohmon · Digimon · Pharaohmon (Avatar of God)

Tier
1-C
Attack Potency
Complex Multiverse Level
Speed
Immeasurable
Durability
Complex Multiverse Level

Veronica · 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.