Karsus vs Zeus (Injustice): who would win?

Zeus (Injustice) favored — Slight edge (~55%)

Karsus · Dungeons & Dragons · Archwizard of Netheril

Tier

HIGH 6-A, up to 2-A

Attack Potency

Multi-Continent Level, up to Multiverse Level+

Speed

Relativistic+, up to Infinite

Durability

Multi-Continent Level, up to Multiverse Level+

Zeus (Injustice) · DC · Base

Tier

HIGH 6-A

Attack Potency

Multi-Continent Level

Speed

Massively Ftl+

Durability

Multi-Continent Level

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