One difference at least seems to be that this encourages development entirely through Javascript. In that sense, it seems more like trying to compare jQuery to

One difference at least seems to be that this encourages development entirely through Javascript. In that sense, it seems more like trying to compare jQuery to Backbone. The disadvantage of this of course, is you lose the true cross platform (plain html) capability that jQuery mobile and jQtouch both provide. Though I don't imagine that would be hard for this project to facilitate at some point.