MGR-IInd vs Arcann: who would win?

Too close to call

MGR-IInd · Godzilla · Base

Tier

4-B

Attack Potency

Solar System Level

Speed

Subsonic, up to Speed Of Light

Durability

Solar System Level

Arcann · Star Wars · Base

Tier

4-B

Attack Potency

Solar System Level

Speed

Massively Ftl+

Durability

Wall Level, up to Solar System Level

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