I don't think that's really true about Polymer. It's still just a framework for creating custom elements. What features are you thinking of to compare to Dojo?

I don't think that's really true about Polymer. It's still just a framework for creating custom elements. What features are you thinking of to compare to Dojo? The big difference that I see is the template binding portion of Polymer which allows you to define an elements markup with data-binding template sort of like Angular.