Chōchō Akimichi vs Trismegistus: who would win?

Trismegistus favored — Slight edge (~55%)

Chōchō Akimichi · Naruto · Chūnin Re-Examination Arc

Tier

6-B, up to HIGH 6-A

Attack Potency

Country Level+, up to Multi-Continent Level

Speed

Sub-Relativistic

Durability

Town Level, up to Multi-Continent Level

Trismegistus · Toaru Majutsu no Index · Base

Tier

6-B

Attack Potency

Country Level

Speed

Speed Of Light

Durability

Country Level

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