Fenghuang vs Arch-vile: who would win?

Too close to call

Fenghuang · Kung Fu Panda · Base

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

Arch-vile · Doom · Modern

Tier
8-C
Attack Potency
Building Level
Speed
Supersonic+
Durability
Building Level, up to Multi-City Block Level

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