X-Men (Marvel vs. Capcom) vs Mothra (MonsterVerse): who would win?

Too close to call

X-Men (Marvel vs. Capcom) · Marvel · Base

Tier

HIGH 6-B, up to 3-C

Attack Potency

Large Country Level, up to Galaxy Level

Speed

Supersonic, up to Ftl

Durability

Large Country Level, up to Galaxy Level

Mothra (MonsterVerse) · Godzilla · Imago (The New Empire)

Tier

HIGH 6-B, up to 4-B

Attack Potency

Large Country Level, up to Solar System Level

Speed

Supersonic, up to High Hypersonic+

Durability

Large Country Level, up to Solar System Level

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