Brand sidebar KPIs read from pre-built aggregates (fast to render). The Listings tab can show a different sample: flat rows from market-points JSON, sometimes filtered further by model, and not always 1:1 with the aggregate counter.
Why numbers differ
Multi-week merges, model-key normalization, and tab sampling can make the Listings tab row count differ from ingest count. Use ingest count for headline liquidity; use the Listings tab to inspect individual posts.