There are only two differences between the hubpages ad program and Google Adsense, as far as payment goes.
Google adsense only pays out in the month following a month where your money due is $100 or more.
Hubpages ad program pays out in the month following a month where your Hubpages ad program money do is $50 or more.
Google pays usually on the 25th - 30th of the month.
Hubpages Ad Program has been paying on the 22nd of each month.