Your mileage may vary, but my good friend Hannes Mühleisen over at CWI Amsterdam maintains this tool: http://wikistats.ins.cwi.nl/. You can script it like so: http://wikistats.ins.cwi.nl/export.php?page=Lady_Gaga%7CBritney_Spears&c.... I let Hannes have the final word, but it seems it is not steadily updating. Could it?
Best, Tom