Indeed, Crosswalk is looking more and more like the future for C2 projects. Just looking at the number of intended export targets when you fire up the XDK is quite promising. Can't say I am totally comforted by either solution , Ludei or XDK, both being cloud and account based. It is somewhat off putting, especially when your signed app needs to go through the same service to be updated on the playstore. What if you have a hit using CocoonJS , but a year later can't update it because Ludei have gone belly up?
Also, recently learned that Intel has bought AppMobi, which bodes well for the future. A one stop shop that does your compiles and ads/in-app etc. through one service provider is compelling. And it is Intel, so it is not as though THEY will go out of business any time soon...