Dioscuri vs Diablo (Light Novel): who would win?

Too close to call

Dioscuri · Nasuverse · True Selves

Tier

1-C

Attack Potency

Complex Multiverse Level

Speed

Relativistic+, up to Immeasurable

Durability

Complex Multiverse Level

Diablo (Light Novel) · Tensei Shitara Slime Datta Ken · Devil Lord

Tier

1-C

Attack Potency

Complex Multiverse Level

Speed

Relativistic+, up to Speed Of Light

Durability

Complex Multiverse Level

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