Doppelganger (Toaru) vs Ghost Girl's Alley: who would win?

Ghost Girl's Alley favored — Slight edge (~55%)

Doppelganger (Toaru) · Toaru Majutsu no Index · Giant Body

Tier

HIGH 8-C

Attack Potency

Large Building Level

Speed

Superhuman

Durability

Large Building Level

Ghost Girl's Alley · JoJo's Bizarre Adventure · Base

Tier

HIGH 8-C

Attack Potency

Large Building Level

Speed

Relativistic

Durability

Unknown

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