The Flood vs Haruyama Koichi: who would win?

Haruyama Koichi favored — Slight edge (~55%)

The Flood · Halo · Base

Tier
9-C, up to 3-C
Attack Potency
Street Level, up to Galaxy Level
Speed
Average Human, up to Massively Ftl+
Durability
Street Level, up to Building Level

Haruyama Koichi · Crows x Worst · Base

Tier
9-C, up to 9-B
Attack Potency
Street Level, up to Wall Level
Speed
Subsonic
Durability
Street Level, up to Wall Level

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