Iharu Furuhashi vs Brainiac (Lego): who would win?

Iharu Furuhashi favored — Slight edge (~55%)

Iharu Furuhashi · Kaiju No. 8 · Base

Tier

8-C, up to 7-A

Attack Potency

Building Level, up to Mountain Level+

Speed

Superhuman, up to High Hypersonic+

Durability

Building Level, up to Mountain Level+

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

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