Slan vs Satori (Naruto): who would win?

Too close to call

Slan · Berserk · Base

Tier
7-A, up to 6-C
Attack Potency
Mountain Level+, up to Island Level
Speed
Massively Hypersonic+
Durability
Mountain Level+

Satori (Naruto) · Naruto · Base

Tier
7-A
Attack Potency
Mountain Level+
Speed
Massively Hypersonic+
Durability
Mountain Level+, up to Large Island Level

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