I know it is 2 different things and seems to be difficult to compare. But which one do you think is is better for webmasters to get extra cash? amazon states its associates can earn a lot of commission, is that true? I make my best money with Adsense but I want an alternative.
I think people generally find AdSense easier to make money from, if only because AdSense pays when people click but amazon only pays when they buy. To make amazon outperform AdSense, you're likely to have to do a lot more than just stick a generic link on your homepage. I'm sure it can be done, though (depending on your niche / visitors).