Yeah. actually you are correct. Adds 20MB is the right approach to say.
I have tested crosswalk lite vs crosswalk with android 4.4.2 and 4.4.4.
without crosswalk, ionic 2 wasn’t functioning well so i would recommend to still use crosswalk to support 4.4.x versions.
Even though the apk size drastically increase, it’s not that bad since now a days device storage is getting larger and larger.
also, with Crosswalk Lite version, i was seeing crashes and when first launching it shows some processing from the crosswalk itself. In my opinion, showing those kind of thing to the end user is not a good thing.
my conclusion is to NOT use the Lite version but to use regular Crosswalk with Android.
If your app is supporting android version above 4.4.x then, you won’t need crosswalk.
Later when we don’t need to support android <= 4.4.x, APK size will drastically reduce. Thanks. Love Ionic 2!!