You can actually also have Adobe Analytics send the data DIL collects directly to AAM server side. As for the value add of Analytics, AAM isn't really an Analytics tool, It's more of a data aggregator. It allows you to bring in data from multiple sources and push that data out into various locations. While it does have a few reporting features, It's no where close to Adobe Analytics.
I've tagged our Analytics and Audience Manager community managers incase they want to add more to the thread.