Well, lets put it this way, there are no better contextual program than adsense. Some people say they earn more therough YPN but the relevancy of ads is not as good as Adsense. There are far too much negative vibe about Clickso, so my impression is that there is no comparios, like a few other have already said.But you can always test the two out.
Adsense should be the best choice, unless you plan to join a publisher network which pays for per impressions or fixed CPC where u know how much u r gonna earn per click..
I like clicksor although it is not better in payouts it has a good feature were it highlights keywords as an ad.
YOU CAN'T COMPARE THESE TWO PROGRAMS. Adsense is always adsense. If you got banned from adsense for faulty clicks, just land up with clicksor.