Instead of pointing you to a link, I will just answer the question. Google Adsense ads all vary quite a bit in nature and of course cost per click. Some even pay when they are shown on the page (and not clicked), this is called an impression and they are generally much lower paying than when someone clicks on an ad link. If you are only using hubpages with your adsense account you will only be receiving a percentage of the total amount paid when someone clicks on an adsense ad. If I recall correctly you receive 60% and hubpages gets the other 40%. And yes, it matters a lot what content is on your page and what the ads pay- there are some really high paying adsense ads but of course the competition is fierce for those topics and keywords.