Clarify total repackaging and incremental compression savings

README.md

@@ -34,13 +34,16 @@ Replace `anime` with `show` or `movie` for the corresponding export. Public down
 
 ## Compression
 
-| File | Compressed bytes | Zstandard level |
-| --- | ---: | ---: |
-| `anime.tar.zst` | 257,310,402 | 22 |
-| `show.tar.zst` | 734,525,132 | 22 |
-| `movie.tar.zst` | 887,925,823 | 22 |
+| File | Original outer .7z bytes | Final .tar.zst bytes | Footprint reduction | Zstandard level |
+| --- | ---: | ---: | ---: | ---: |
+| `anime.tar.zst` | 674,437,410 | 257,310,402 | 61.848% | 22 |
+| `show.tar.zst` | 1,600,598,463 | 734,525,132 | 54.109% | 22 |
+| `movie.tar.zst` | 2,135,025,448 | 887,925,823 | 58.411% | 22 |
+| **Total** | **4,410,061,321** | **1,879,761,357** | **57.376%** | — |
 
-One-time compression favors smaller subsequent downloads. All three archives use `--ultra -22 -T8`, without `--long`, saving a combined 688,414,063 bytes (26.806%) against their earlier compressed sizes. Ordinary `tar --zstd` extraction works; `--ultra` is an encoder setting, not a required extraction option.
+The supplied original outer `.7z` archives total 4,410,061,321 bytes; the published final archives total 1,879,761,357 bytes. This reduces the download/archive footprint by **2,530,299,964 bytes (57.376%)**.
+
+One-time compression favors smaller subsequent downloads. All three archives use `--ultra -22 -T8`, without `--long`. This adds 688,414,063 bytes (26.806%) of savings against earlier, already flattened `.tar.zst` archives; it is the incremental compression saving, not the total reduction from the original `.7z` exports. Ordinary `tar --zstd` extraction works; `--ultra` is an encoder setting, not a required extraction option.
 
 ## Sources and scope