Kamikaze vs One-Eye: who would win?

Kamikaze favored — Slight edge (~55%)

Kamikaze · One-Punch Man · Base

Tier

6-B, up to 6-A

Attack Potency

Country Level, up to Continent Level

Speed

Massively Hypersonic+, up to Relativistic

Durability

Continent Level

One-Eye · Godzilla · Base

Tier

6-B, up to 4-B

Attack Potency

Country Level+, up to Solar System Level

Speed

Subsonic+, up to High Hypersonic+

Durability

Country Level+, up to Solar System Level

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