Kamen Rider Zero-One (End of Series) vs R-System: who would win?

Kamen Rider Zero-One (End of Series) favored — Slight edge (~55%)

Kamen Rider Zero-One (End of Series) · Kamen Rider · REALxTIME

Tier

HIGH 6-A, up to 5-B

Attack Potency

Multi-Continent Level, up to Planet Level

Speed

Subsonic, up to Ftl+

Durability

Multi-Continent Level, up to Planet Level

R-System · Fairy Tail · Base

Tier

HIGH 6-A

Attack Potency

Multi-Continent Level

Speed

Unknown

Durability

Island Level

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