Jin Kazama vs Hero (Dragon Quest I): who would win?

Hero (Dragon Quest I) 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

Hero (Dragon Quest I) · 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.