Jin Kazama vs Malroth: who would win?

Malroth favored — Slight edge (~55%)

Jin Kazama · Tekken · Devil Jin

Tier
HIGH 6-A
Attack Potency
Multi-Continent Level
Speed
Supersonic, up to Relativistic
Durability
Multi-Continent Level

Malroth · Dragon Quest · Base

Tier
HIGH 6-A
Attack Potency
Multi-Continent Level
Speed
Massively Hypersonic+
Durability
Multi-Continent Level

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