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A is a correct, well-tested filter for stickied/pinned Reddit children, but it is a narrow import-side tweak versus B’s lasting core-model simplification.\"}","refusal":null,"reasoning":"The user wants me to compare two commits and decide which contributed more lasting value.\n{\"winner\": \"B\", \"ratio\": \"3:1\", \"explanation\": \"Side B refactors recent_votes from capped Deque to append-only List across reducer, projection_store, storage_schema, and storage_dto, removes trim_recent_votes entirely, bumps schema version, and adds a query-time cap test — a core architectural simplification that touches the entire vote storage model. Side A adds a single pinned-post skip helper and test in reddit.rs — a narrow quality improvement. 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