Mundus (DMC reboot) vs Amber (RWBY): who would win?

Too close to call

Mundus (DMC reboot) · Devil May Cry · Kyle Rider Form

Tier

8-B, up to 3-A

Attack Potency

City Block Level, up to Universe Level

Speed

Massively Hypersonic

Durability

City Block Level, up to Universe Level

Amber (RWBY) · RWBY · Base

Tier

8-B, up to LOW 7-B

Attack Potency

City Block Level, up to Small City Level

Speed

Massively Hypersonic

Durability

City Block Level, up to Small City Level

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