Malcador the Sigillite vs Electric Skull: who would win?

Malcador the Sigillite favored — Slight edge (~55%)

Malcador the Sigillite · Warhammer 40,000 · Base

Tier

8-B, up to HIGH 4-C

Attack Potency

City Block Level, up to Large Star Level

Speed

Hypersonic

Durability

Building Level, up to Large Building Level

Electric Skull · Steven Universe · Base

Tier

8-B

Attack Potency

City Block Level

Speed

Unknown

Durability

Wall Level

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