Sonic the Hedgehog (Archie Pre-Genesis Wave) vs Sigma Circular: who would win?

Sigma Circular favored — Slight edge (~55%)

Sonic the Hedgehog (Archie Pre-Genesis Wave) · Sonic · Super Sonic

Tier

1-C

Attack Potency

Complex Multiverse Level

Speed

Supersonic, up to Immeasurable

Durability

Complex Multiverse Level

Sigma Circular · Kamen Rider · Base

Tier

1-C

Attack Potency

Complex Multiverse Level

Speed

Speed Of Light, up to Ftl

Durability

Complex Multiverse Level

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