Arthur Pendragon (Nanatsu no Taizai) vs The Hero Association: who would win?

Too close to call

Arthur Pendragon (Nanatsu no Taizai) · Nanatsu no Taizai · Post-Resurrection

Tier: 4-A, up to LOW 2-C
Attack Potency: Multi-Solar System Level, up to Universe Level+
Speed: Ftl, up to Ftl+
Durability: Unknown

The Hero Association · One-Punch Man · With Blast

Tier: 4-A
Attack Potency: Multi-Solar System Level
Speed: Unknown
Durability: Unknown

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