We released our first game using C2 and CocoonJS some months ago. It works fine on both Android phones/tablets. However, our game does not meet Google's tablet requirements. To do this correctly would require additional graphical assets and layouts designed for various screen resolutions (LARGE and X-LARGE). I'm not sure how this can be accomplished at the moment.
Google's requirements are quite specific. Here is a link to what they want:
Does anyone have any experience with this?