Isao Shinomiya vs Meruem: who would win?

Too close to call

Isao Shinomiya · Kaiju No. 8 · Base

Tier

7-A, up to 6-A

Attack Potency

Mountain Level+, up to Continent Level

Speed

High Hypersonic+, up to Ftl

Durability

Mountain Level+

Meruem · Hunter x Hunter · Post-Rose

Tier

7-A

Attack Potency

Mountain Level+

Speed

Massively Hypersonic, up to Speed Of Light

Durability

Mountain Level+

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