My last tests:
When running my game using "App preview" launcher on my mobile I got low FPS, but after installing the .apk I got a nice solid — FPS . Also the graphics are sharp on the apk version.
YEAH... this could be the replacement for Cocoonjs .
Downside: apk too big. With CocoonJS I can make the apk 5MB by removing one of the 2 arm library, but with XDK I got 20MB (my assets have no more than 1MB)
Other things to notice:
1. my phone warms more with XDK version (not using physics)
2. Orientation is not locked
3. Icon missing (that is expected since I did not upload my own icon to XDK project)
4. No LUDEI splash (the game starts on time, not after 7 seconds)
I have no problem with the 20MB size, but I think that size will make some people not downloading the game.