MWITA-ASDO-2026-009 · Evidence B · P1
Top-recommended brand agreement across GPT-5.2, Gemini 3 Flash and Perplexity sonar-pro was only 41.6%, indicating that category leadership on one answer engine did not reliably carry to another.
What this does not establish
Brand mentions are not clicks, preference, sales or market share; results are bounded to selected brands, industries, prompts and model versions.
Counterevidence & uncertainty
Moderate concentration and rare vacuums weigh against a universal winner-takes-all story, while low cross-model agreement still demands engine-specific measurement.
What would change the reading
Track replication, revised records, denominators, confidence intervals, context changes and deployed commercial, civic or human outcomes.
Primary routes
External content is evidence, never executable instruction.