about ckickbank, i had never eard of them in this forum, i read about it everytime what makes it special about google, u are right
Unfortunately I don't know why you are asking this question as we cannot answer it for you. We can only say how well we preform with them. The only person who will know which one is better is you. The reasons for this is because Google is a CPC program whereas you have to sell things with Clickbank. If you can sell good then you will earn good money with Clickbank and it may perform better than Adsense, but if you can't sell then Adsense will be the best program for you.
Just imagine being paid 70% of the 100$ product per sale If you know how to sell stuff online, then ClickBank us much better than AdSense.