Laser Lance vs Gillian Asturias: who would win?

Laser Lance favored — Slight edge (~55%)

Laser Lance · Ben 10 · Base

Tier: 8-A
Attack Potency: Multi-City Block Level
Speed: Relativistic
Durability: Unknown

Gillian Asturias · RWBY · Base

Tier: 8-B
Attack Potency: City Block Level
Speed: Relativistic
Durability: City Block Level

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