This page tries to answer one simple questions?
How many devices will be supported when I develop my app with PhoneGap (Build) or Adobe AIR?
The tested mobile apps are 'no feature' apps, without any required permission.
No GPS, no anything.
Usually, the amount of supported devices will decrease with every additional requirement.
Source: Android Developer Console
PhoneGap app size: 0.34 MB
Adobe AIR app size: 9.61 MB