White Rabbit (Netflix DMC) vs Kamen Rider Buster: who would win?

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

White Rabbit (Netflix DMC) · Devil May Cry · Base

Tier

9-B, up to 8-C

Attack Potency

Wall Level, up to Building Level

Speed

Supersonic+

Durability

Wall Level, up to Building Level

Kamen Rider Buster · Kamen Rider · Megid War (1-15)

Tier

9-B, up to 6-C

Attack Potency

Wall Level, up to Island Level

Speed

Massively Hypersonic, up to Massively Hypersonic+

Durability

Wall Level, up to Island Level

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