Mugino Shizuri vs Mumbo: who would win?

Mugino Shizuri favored — Favored (~65%)

Mugino Shizuri · Toaru Majutsu no Index · Base

Tier

8-A, up to 7-C

Attack Potency

Multi-City Block Level+, up to Town Level

Speed

Athletic Human, up to High Hypersonic+

Durability

Multi-City Block Level+, up to Town Level

Mumbo · DC · Base

Tier

LOW 7-C

Attack Potency

Athlete Level, up to Small Town Level

Speed

Relativistic

Durability

Athlete Level, up to Small Town Level

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