Gunpei Ikari vs Nanomech: who would win?

Gunpei Ikari favored — Slight edge (~55%)

Gunpei Ikari · Godzilla · Base

Tier

10-A, up to 9-C

Attack Potency

Street Level

Speed

Athletic Human, up to Supersonic

Durability

Athlete Level

Nanomech · Ben 10 · Base

Tier

9-C

Attack Potency

Street Level

Speed

Average Human

Durability

Below Average Human Level

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