"Dread Emperor" Ganishka vs Zaneri: who would win?

Zaneri favored — Favored (~65%)

"Dread Emperor" Ganishka · Berserk · Shiva Form

Tier
HIGH 7-A
Attack Potency
Multi-City Block Level
Speed
Subsonic, up to Subsonic+
Durability
Large Mountain Level

Zaneri · Nanatsu no Taizai · Base

Tier
HIGH 7-A
Attack Potency
Unknown
Speed
Sub-Relativistic
Durability
Unknown

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