Biollante vs Exar Kun: who would win?

Too close to call

Biollante · Godzilla · Rose Form

Tier

HIGH 4-C

Attack Potency

Large Star Level

Speed

Immobile, up to Subsonic

Durability

Large Star Level

Exar Kun · Star Wars · Post-Yavin IV Force Drain Ritual

Tier

HIGH 4-C

Attack Potency

Large Star Level

Speed

Relativistic, up to Ftl

Durability

Street Level, up to Large Star Level

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