Jiji vs The Morrigan: who would win?

Too close to call

Jiji · Dandadan · Accessing Ki

Tier
9-A, up to HIGH 8-C
Attack Potency
Small Building Level+, up to Building Level+
Speed
Superhuman
Durability
Building Level

The Morrigan · Assassin's Creed · Base

Tier
9-A, up to HIGH 8-C
Attack Potency
Small Building Level+, up to Large Building Level
Speed
Superhuman, up to Supersonic
Durability
Large Building Level

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