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+## Diagnostic results: v0.2 vs USEEIO and CEDA-US benchmarks
+
+v0.2 is compared against two external benchmarks in parallel:
+
+- **USEEIO** — USEEIOv2.6.0-phoebe-23 on [Zenodo](https://zenodo.org/records/17457336).
+- **CEDA-US** — US portion of the multi-regional CEDA model.
+
+### Headline numbers
+
+| Metric                                    | vs USEEIO | vs CEDA-US |
+| ----------------------------------------- | --------- | ---------- |
+| Median EFs percentage change              | _TBD_     | _TBD_      |
+| Median EFs absolute change                | _TBD_     | _TBD_      |
+| Number of sectors shifting > _20%_ in EFs | _TBD_     | _TBD_      |
+| Top 3 flags by impact on B-matrix entries | _TBD_     | _TBD_      |
+
+### Figures (USEEIO and CEDA-US benchmarks, side-by-side)
+
+#### (1) Histograms
+
+**(1a) EF %-change distribution** — 2×2 panels of numerator / denominator percent-diff distributions.
+
+| vs USEEIO                                                                                              | vs CEDA-US                                                                                            |
+| ------------------------------------------------------------------------------------------------------ | ----------------------------------------------------------------------------------------------------- |
+| ![EF %-change vs USEEIO](bedrock/utils/validation/analysis/output/useeio/ef_n_perc_diff_histogram.png) | ![EF %-change vs CEDA-US](bedrock/utils/validation/analysis/output/ceda/ef_n_perc_diff_histogram.png) |
+
+**(1b) EF absolute change distribution**
+
+| vs USEEIO                                                                                                    | vs CEDA-US                                                                                                  |
+| ------------------------------------------------------------------------------------------------------------ | ----------------------------------------------------------------------------------------------------------- |
+| ![EF absolute change vs USEEIO](bedrock/utils/validation/analysis/output/useeio/ef_abs_change_histogram.png) | ![EF absolute change vs CEDA-US](bedrock/utils/validation/analysis/output/ceda/ef_abs_change_histogram.png) |
+
+#### (2) x–y plots
+
+**(2a) EF size (x-axis) vs EF %-change (y-axis)**
+
+| vs USEEIO                                                                                                    | vs CEDA-US                                                                                                  |
+| ------------------------------------------------------------------------------------------------------------ | ----------------------------------------------------------------------------------------------------------- |
+| ![EF size vs %-change, USEEIO](bedrock/utils/validation/analysis/output/useeio/ef_pct_change_vs_ef_size.png) | ![EF size vs %-change, CEDA-US](bedrock/utils/validation/analysis/output/ceda/ef_pct_change_vs_ef_size.png) |
+
+**(2b) EF absolute change (x-axis) vs EF %-change (y-axis)**
+
+| vs USEEIO                                                                                                      | vs CEDA-US                                                                                                    |
+| -------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------- |
+| ![EF abs vs %-change, USEEIO](bedrock/utils/validation/analysis/output/useeio/ef_pct_change_vs_abs_change.png) | ![EF abs vs %-change, CEDA-US](bedrock/utils/validation/analysis/output/ceda/ef_pct_change_vs_abs_change.png) |
+
+#### (3) Stacked-bar chart — sector-level net-change attribution
+
+| vs USEEIO                                                                                                                   | vs CEDA-US                                                                                                                 |
+| --------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------- |
+| ![BLy sector stacked net change, USEEIO](bedrock/utils/validation/analysis/output/useeio/bly_sector_stacked_net_change.png) | ![BLy sector stacked net change, CEDA-US](bedrock/utils/validation/analysis/output/ceda/bly_sector_stacked_net_change.png) |