Hoshimi Miyabi vs Magnus Chase: who would win?

Hoshimi Miyabi favored — Slight edge (~55%)

Hoshimi Miyabi · Zenless Zone Zero · Base

Tier
7-C, up to HIGH 7-C
Attack Potency
Town Level, up to Large Town Level
Speed
Subsonic, up to High Hypersonic
Durability
Town Level, up to Large Town Level

Magnus Chase · Percy Jackson · Base

Tier
7-C
Attack Potency
Town Level
Speed
Superhuman, up to Subsonic
Durability
City Block Level

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