Brainiac (Lego) vs Reiko Kashima: who would win?

Reiko Kashima favored — Slight edge (~55%)

Brainiac (Lego) · DC · Base

Tier

8-C, up to 5-B

Attack Potency

Building Level, up to Planet Level

Speed

Peak Human, up to Superhuman

Durability

Wall Level

Reiko Kashima · Dandadan · Base

Tier

8-C, up to HIGH 7-C

Attack Potency

Building Level, up to Large Town Level

Speed

Superhuman, up to Supersonic

Durability

Building Level

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