Meruem vs Gen Narumi: who would win?

Too close to call

Meruem · Hunter x Hunter · Post-Rose

Tier

7-A

Attack Potency

Mountain Level+

Speed

Massively Hypersonic, up to Speed Of Light

Durability

Mountain Level+

Gen Narumi · Kaiju No. 8 · Numbers Weapon Suit

Tier

7-A, up to HIGH 6-B

Attack Potency

Mountain Level+, up to Large Country Level

Speed

High Hypersonic+

Durability

Mountain Level+, up to Multi-Continent Level

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