Typhon (Re:Zero) vs Puck (Berserk): who would win?

Typhon (Re:Zero) favored — Slight edge (~55%)

Typhon (Re:Zero) · Re:Zero kara Hajimeru Isekai Seikatsu · Base

Tier
10-C
Attack Potency
Below Average Human Level
Speed
Sub-Relativistic, up to Relativistic+
Durability
Below Average Human Level

Puck (Berserk) · Berserk · Base

Tier
10-C
Attack Potency
Below Average Human Level
Speed
Subsonic, up to Speed Of Light
Durability
Below Average Human Level

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