Itsuwa vs Vespid: who would win?

Too close to call

Itsuwa · Toaru Majutsu no Index · Base

Tier

9-C, up to 8-B

Attack Potency

Street Level, up to City Block Level

Speed

Peak Human, up to Supersonic

Durability

City Block Level

Vespid · Warhammer 40,000 · Base

Tier

9-C

Attack Potency

Street Level

Speed

Subsonic, up to Hypersonic

Durability

Building Level+

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