E.g. https://xtools.wmflabs.org/ec-generalstats/en.wikipedia.org/GoldenRing versus https://xtools.wmflabs.org/pages/en.wikipedia.org/GoldenRing/all/none
The discrepancy appears to be that the Pages tool (appropriately) does not count deleted pages that were redirects created because of a move. In a nutshell, we need a version of this query that gives us a single COUNT:
SELECT a.ar_namespace AS namespace, 'arc' AS type, a.ar_title AS page_title, 0 AS page_len, '0' AS page_is_redirect, MIN(a.ar_timestamp) AS rev_timestamp, a.ar_user AS rev_user, a.ar_user_text AS username, a.ar_len AS rev_len, a.ar_rev_id AS rev_id, NULL AS pa_class, NULL AS pa_page_id, NULL AS pa_page_revision FROM `enwiki_p`.`archive_userindex` a JOIN ( SELECT b.ar_namespace, b.ar_title FROM `enwiki_p`.`archive_userindex` AS b LEFT JOIN `enwiki_p`.`logging_userindex` ON log_namespace = b.ar_namespace AND log_title = b.ar_title AND log_user = b.ar_user AND (log_action = 'move' or log_action = 'move_redir') WHERE ar_user = '90672' AND ar_timestamp > 1 AND b.ar_parent_id = '0' AND log_action IS NULL ) AS c ON c.ar_namespace = a.ar_namespace AND c.ar_title = a.ar_title GROUP BY a.ar_namespace, a.ar_title HAVING rev_user = '90672'
Make sure both interfaces match what is currently output by the Pages tool.