Do i need Cordrova Phonegap for full access to native APIs, or is WebWorks enough
Define "full". I question weather PhoneGap can deliver that.
What APIs are you interested in specificly?
Its just a general question, I know Phonegap doesnt provide access to all Blackberry APIs, but i really dont know about webworks
You are familiar with the PhoneGap feature matrix? Seems to cover most APIs of WebWorks. They are described here.
Alas in that matrix there's no column for the BB7, BB10 and PlayBook platforms. I know for a fact that the PlayBook does have a compass, but I don't know weather you can access that through PhoneGap.