phone feature List ?

I am in the process of doing some research on different platforms for the mobile space. The two main contenders at this point in time for us are Flex 4.5 and phonegap. The problem I am running in to with Flex is the lack of a side by side comparison, or a list of features support by flex 4.5 and air.

When I go on to the phonegap site they have a nice table with all features supported by phone gap (by features I mean what can be accessed on the device) but when I try and find the same info on the adobe site I seem to get stuck in a loop of vague explanations and tutorials.

So I guess the question is, are there any comparison charts, white papers specs etc that can just give me the facts without the fluff?

Sorry if that comes off bad I'm just trying to get the facts.

Thanks!