Zero the Great vs Atom Smasher: who would win?

Too close to call

Zero the Great · Kamen Rider · Base

Tier

LOW 4-C

Attack Potency

Small Star Level

Speed

Subsonic, up to Speed Of Light

Durability

Small Star Level

Atom Smasher · DC · Base

Tier

LOW 4-C

Attack Potency

Small Star Level

Speed

Superhuman, up to Relativistic+

Durability

Small Star Level

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