Shion Madarame vs Nanomech: who would win?

Shion Madarame favored — Slight edge (~55%)

Shion Madarame · Tokyo Revengers · Base

Tier
9-C
Attack Potency
Street Level
Speed
Unknown
Durability
Street 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.