Kamen Rider Sabela vs Boarbatusk: who would win?

Kamen Rider Sabela favored — Slight edge (~55%)

Kamen Rider Sabela · Kamen Rider · Traitor Arc (25-35)

Tier

9-B, up to 6-C

Attack Potency

Wall Level, up to Island Level

Speed

Massively Hypersonic, up to Speed Of Light

Durability

Wall Level, up to Island Level

Boarbatusk · RWBY · Base

Tier

9-B

Attack Potency

Wall Level

Speed

Hypersonic

Durability

Wall Level, up to Large Building Level

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