If I understand you to mean I would be able to deploy to all types of devices with browsers or webkit, you're right.
There are more Android OS devices shipping and out there than all of the other OSs combined. By focusing on just Android, I can be assured it will look and perform more uniformly than the web app route. Even ART has closed the gap with NDK on some HPC or numerical use cases vs. the older Dalvik.
I don't like Java compared to other languages, even JavaScript ;) But it's not too bad, and Android documentation is great as well as the number of answers you can find on SE for any given question.