Corvus Corax vs Diane: who would win?

Diane favored — Slight edge (~55%)

Corvus Corax · Warhammer 40,000 · In the Eye of Terror

Tier

4-B

Attack Potency

Solar System Level

Speed

Transonic, up to Massively Ftl+

Durability

Solar System Level

Diane · Nanatsu no Taizai · Post-Training

Tier

4-B

Attack Potency

Solar System Level

Speed

Sub-Relativistic, up to Ftl

Durability

Solar System Level

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