Django CMS has a content view and a structural view, and they clearly want you to spend most of your time in the content view. The structural drag-and-drop interface is barebones and, to the naive user, it's far from obvious how the nested lists of grey blobs relates to the actual content on the website.

In contrast, Widgy's interface attempts to be more like a WYSIWYM structural editor. New widgets are created by dragging them from a widget palette. Draggable objects represent their content in some way, and the physical layout of the widgets and dropzones matches the layout of the webpage being designed.