Evil Natural Water vs Idea of Evil: who would win?

Idea of Evil favored — Slight edge (~55%)

Evil Natural Water · One-Punch Man · Evil Ocean Water

Tier
5-C
Attack Potency
Moon Level+
Speed
Massively Hypersonic
Durability
Unknown

Idea of Evil · Berserk · Base

Tier
LOW 5-B
Attack Potency
Small Planet Level
Speed
Massively Hypersonic, up to Omnipresent
Durability
Large Mountain Level

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