Yatsuhashi Tsukumo vs Mephistopheles Yoma: who would win?

Yatsuhashi Tsukumo favored — Slight edge (~55%)

Yatsuhashi Tsukumo · Touhou Project · Nameless Form

Tier

LOW 2-C

Attack Potency

Universe Level+

Speed

Infinite, up to Omnipresent

Durability

Universe Level+

Mephistopheles Yoma · Saint Seiya · Yoma's Body

Tier

LOW 2-C

Attack Potency

Universe Level+

Speed

Massively Ftl+

Durability

Universe Level+

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