Malcador the Sigillite vs AIM Burst: 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

AIM Burst · Toaru Majutsu no Index · Base

Tier
8-B
Attack Potency
City Block Level
Speed
Average Human
Durability
Wall Level, up to Town Level

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