Millennian Io vs Laser Lance: who would win?

Laser Lance favored — Slight edge (~55%)

Millennian Io · Godzilla · Unstable State/Orga

Tier

8-A

Attack Potency

Multi-City Block Level

Speed

Subsonic, up to Supersonic+

Durability

Multi-City Block Level

Laser Lance · Ben 10 · Base

Tier

8-A

Attack Potency

Multi-City Block Level

Speed

Relativistic

Durability

Unknown

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