Britney vs Kamen Rider Birth (Akira Date): who would win?

Kamen Rider Birth (Akira Date) favored — Slight edge (~55%)

Britney · Edens Zero · Base

Tier: 5-B
Attack Potency: Planet Level+
Speed: High Hypersonic
Durability: Unknown

Kamen Rider Birth (Akira Date) · Kamen Rider · Kamen Rider Birth Prototype

Tier: 5-B
Attack Potency: Planet Level
Speed: Ftl
Durability: Planet Level

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