So you link to the Polymer TodoMVC example to show that it uses Polymer's data-binding, and this is supposed to show... what exactly?

SkateJS's TodoMVC uses JSX[1]. Does that also imply that all Web Components need to use JSX? I don't see any logic in your claims.

[1]: https://github.com/skatejs/todomvc/blob/skatejs/examples/ska...