Pulchra Fellini vs Shulker: who would win?

Pulchra Fellini favored — Slight edge (~55%)

Pulchra Fellini · Zenless Zone Zero · Base

Tier
8-C
Attack Potency
Building Level
Speed
Superhuman, up to Massively Hypersonic
Durability
Building Level

Shulker · Minecraft · Base

Tier
8-C
Attack Potency
Building Level
Speed
Immobile, up to Subsonic
Durability
Building Level, up to City Block Level

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