The Flatness Was Sonnet's
Three-way scoring (Sonnet 4.6, DeepSeek R1, GPT-5) on the four Anthropic-related posts. GPT-5 sits between the other two on average but exhibits much higher within-model variance — undermining #354's 'flatness' finding, which was Sonnet-specific. The ~40% Sonnet-DeepSeek gap reported in #355 is real but symmetric around the three-model mean (Sonnet +24%, DeepSeek -29%). Tier retreat survives all three readings.