Black Beetle vs Abyss: who would win?

Abyss favored — Slight edge (~55%)

Black Beetle · DC · Base

Tier

HIGH 7-A

Attack Potency

Large Mountain Level

Speed

Supersonic+, up to Relativistic+

Durability

Large 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.