Aizono Mio vs Paimon: who would win?

Paimon favored — Slight edge (~55%)

Aizono Mio · Toaru Majutsu no Index · Base

Tier

9-C, up to 8-C

Attack Potency

Street Level, up to Building Level

Speed

Transonic

Durability

Street Level, up to Building Level

Paimon · Genshin Impact · Base

Tier

9-C

Attack Potency

Street Level

Speed

Relativistic

Durability

Street Level

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