Kamen Rider Espada vs Pegasus (Dungeons and Dragons): who would win?

Pegasus (Dungeons and Dragons) favored — Slight edge (~55%)

Kamen Rider Espada · Kamen Rider · Base

Tier

9-B, up to 1-C

Attack Potency

Wall Level, up to Complex Multiverse Level

Speed

Massively Hypersonic, up to Massively Ftl+

Durability

Wall Level, up to Complex Multiverse Level

Pegasus (Dungeons and Dragons) · Dungeons & Dragons · Base

Tier

9-B, up to 9-A

Attack Potency

Wall Level, up to Small Building Level

Speed

Relativistic+, up to Ftl

Durability

Wall Level, up to Small Building Level

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