Surtur (Marvel Cinematic Universe) vs Apollo Geist (Showa): who would win?

Too close to call

Surtur (Marvel Cinematic Universe) · Marvel · Eternal Flame

Tier

LOW 4-C, up to 4-B

Attack Potency

Small Star Level, up to Solar System Level

Speed

Superhuman, up to Subsonic

Durability

Small Star Level, up to Solar System Level

Apollo Geist (Showa) · Kamen Rider · Apollogeist

Tier

LOW 4-C

Attack Potency

Small Star Level

Speed

Athletic Human, up to Speed Of Light

Durability

Small Star Level

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