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No accepted 1M comparison or speed ratio; wide/deep 1M workloads were not run.","Windows 10K: three shapes, two alternating runs per tool, all 12 measured samples retained; diagnostic ratios are not general speedup claims.","Warm cache, synthetic regular files of256bytes; timings include process startup and directory output. Conditions differ across platforms.","No cold-cache, whole-disk or unmeasured-device speed claims. Record hashes preserve provenance consistency, not cryptographic attestation.","Windows vs dua-cli: local Windows 11/NTFS, apparent-size logical bytes, HyperDU d4ebdb8 and dua-cli 2.45.0 built with the same rustc; 12 alternating warm runs per tool, all samples retained; byte totals equal an independent walk. Unrelated background jobs held the CPU at roughly 60-90 percent busy, so absolute times are inflated and this is not an isolated benchmark host.","Windows vs tokei: reference only. tokei counts source lines and reads file contents, so no speed ratio is claimed; two real trees only. 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