I have no idea what sreejithsinger is trying to say to you, but I know that he hasn't answered your question. Looks like jibberish to me.
I will have a go though. There are often disparities between AdSense and Hubpages stats as a pure and simple result of differences in the way that the two program track an impression. Hubpages track page views, so each and every visitor to your Hubpage, even if they click back off the page within a second.
AdSense will generally record an 'impression' after a period of a few seconds on the page, remember that a page view can be short enough to end before ads are even displayed. People may be clicking 'back' before the Ads load, others may have dial up in developing countries, it can take ages for an ad to load on that crap connection.
Ultimately though, in laymans terms, what Hubpages considers to be a page view can differ from what Google consider an impression.