Bisai Otome vs Skavenslaves: who would win?

Bisai Otome favored — Slight edge (~55%)

Bisai Otome · Toaru Majutsu no Index · Base

Tier

9-C

Attack Potency

Street Level

Speed

Average Human

Durability

Human Level

Skavenslaves · Warhammer Fantasy · Skavenslaves

Tier

10-B, up to 9-B

Attack Potency

Human Level, up to Wall Level

Speed

Superhuman, up to Subsonic

Durability

Human Level

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