Kratos (Mortal Kombat) vs Artificial Valkyrie: who would win?

Kratos (Mortal Kombat) favored — Slight edge (~55%)

Kratos (Mortal Kombat) · Mortal Kombat · Base

Tier

HIGH 8-C, up to LOW 2-C

Attack Potency

Large Building Level, up to Universe Level+

Speed

Massively Hypersonic+

Durability

Large Building Level, up to Universe Level+

Artificial Valkyrie · Toaru Majutsu no Index · Base

Tier

HIGH 8-C, up to 7-C

Attack Potency

Large Building Level, up to Town Level

Speed

Supersonic

Durability

Large Building Level, up to Town Level

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