Monster X (IDW) vs Four Great Rulers: who would win?

Monster X (IDW) favored — Slight edge (~55%)

Monster X (IDW) · Godzilla · Monster X

Tier

5-A

Attack Potency

Large Planet Level

Speed

Massively Ftl+

Durability

Large Planet Level

Four Great Rulers · Genshin Impact · Base

Tier

5-A, up to 2-C

Attack Potency

Large Planet Level, up to Low Multiverse Level

Speed

Ftl

Durability

Large Planet Level

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