Futaba Sakura vs Chaos (Riordan): who would win?

Chaos (Riordan) favored — Slight edge (~55%)

Futaba Sakura · Megami Tensei · Base

Tier

LOW 2-C, up to 1-A

Attack Potency

Universe Level+, up to Outerverse Level

Speed

Immeasurable

Durability

Universe Level+, up to Outerverse Level

Chaos (Riordan) · Percy Jackson · Base

Tier

LOW 2-C

Attack Potency

Universe Level+

Speed

Omnipresent

Durability

Universe Level+

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