Who was a worse Prime Minister - John Howard or Kevin Rudd?

It depends on what your views are. Kevin Rudd apploigised to the Aboriginals, while John Howard refused to, however Julia Gillard had to take over his place as Prime Minister, because apparently he wasn't doing his job efficiently.

It should be noted that, while John Howard brought in some policies that were not popular, he and his team were Excellent economic managers. They amassed a significant budget surplus, which in essence was the only thing that carried the subsequent Labor government through the global recession with minimal impact on the country.