admin user did get this output.
Anonymous gets more info with "new_*" values:
{"success":true,"filesize":{"value":"347.46 KB","text":"Total uploaded"},"filesize_bytes":{"value":"355794","text":"Total uploaded bytes"},"users":{"value":"9","text":"Users"},"new_users":{"value":"8","text":"New users"},"websites":{"value":"7","text":"Websites"},"new_websites":{"value":"7","text":"New websites"},"posts":{"value":"74","text":"Posts"},"new_posts":{"value":"70","text":"New posts"},"publications":{"value":"7","text":"Publications"},"new_publications":{"value":"3","text":"New publications"},"files":{"value":"9","text":"Uploaded files"},"href":"http:\/\/localhost\/openscholar3x\/www\/stats?version=1\u0026format=json\u0026type=all\u0026style=default","os_version":"7.x-3.10"}