You better see Moodle as the learn-organiser for students and teachers.
The idea behind it is that it helps students to get an overview of the possiblities in a course and to take responsibilty for their own learning. A teacher gets a set of new tools to organise student activities in that light.
In that organiser you can also "hang" exercises created in Macromedia, because MX products can create pages that run on webservers, so also in Moodle and they can exchange student-info with XML. On this moment the gradebook in Moodle only handles final scores, not the other AICC-parameters.
Products like HotPotatoes are adapted to give that endresult back to the Moodle gradebook.
Moodle is a different kind of sport, give it a try anyway, you will not regret.