Antares vs Passionlip: who would win?

Too close to call

Antares · Solo Leveling · Base

Tier
LOW 6-B
Attack Potency
Small Country Level
Speed
Speed Of Light
Durability
Small Country Level

Passionlip · Nasuverse · Base

Tier
LOW 6-B, up to 1-C
Attack Potency
Small Country Level, up to Complex Multiverse Level
Speed
Relativistic+, up to Immeasurable
Durability
Small Country Level, up to Complex Multiverse Level

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