This is true but in practice it's not so different really. On iOS you layout an xml doc describing your widget tree (maybe via a wysiwyg builder) and attach eve

This is true but in practice it's not so different really. On iOS you layout an xml doc describing your widget tree (maybe via a wysiwyg builder) and attach event handling code to bits of the tree, just like HTML5/DOM. Native apps have better data models but things like Sproutcore might even the score.