Azazel (Tekken) vs Abyss: who would win?

Azazel (Tekken) favored — Slight edge (~55%)

Azazel (Tekken) · Tekken · Azazel

Tier
7-A
Attack Potency
Mountain Level+
Speed
Relativistic
Durability
Mountain Level+

Abyss · Berserk · Base

Tier
HIGH 7-A, up to HIGH 6-A
Attack Potency
Large Mountain Level, up to Multi-Continent Level
Speed
Massively Hypersonic+
Durability
Large Mountain Level

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