Conrad Leto vs Joshua: who would win?

Conrad Leto favored — Slight edge (~55%)

Conrad Leto · Black Clover · Post-Sealing

Tier

6-B, up to HIGH 6-A

Attack Potency

Country Level+, up to Multi-Continent Level

Speed

Relativistic

Durability

Country Level, up to Multi-Continent Level

Joshua · Fire Emblem · Late/Endgame

Tier

6-B

Attack Potency

Country Level+

Speed

Superhuman, up to Massively Hypersonic

Durability

Country Level+

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