Not sure how much difference there is really. I know that PPL (language wise) is very similar to C++ and the IDE while not as polished as VS, has the bonus of running on the WM device so development can be done while mobile without the need for a laptop or PC being used!
Its still a very young product, but the guys at Arianesoft are constantly improving it and fixing any bugs that are identified.
Give the trial version a shot and see if it can help you? - I had never programmed for WM devices before touching PPL. Now I create all sorts of stuff. Check the forum for things the guys have created with PPL, its impressive for such a young development language!
Mike.
I wont use anything else (Even if it can't be done in PPL - I will make it work in PPL! lol )