PocketMatrix

I would say that, thats why I used PF to make my game, the blit example had almost everything I needed to make the game, and the conan tutorials also helped me a lot.

I would say so. I evaluated both when I started programming pocketpc and went with PocketFrog because it was the one I could understand. To be fair to GD it does have a more formal, organised support setup but of course you have to pay to use it if you publish your work.

As someone who has developed a commercial product with both and started out with PF then moved to GD...

I found PF to be just slightly easier than GD, but that can almost entirely be boiled down to the amount of options available in GD. In general you can do more on a per-call basis (i.e., there are more options available in the GD blit than the PF blit), but this flexibility makes the calling syntax just a hair more complex.

I think there is enough example code floating around for both, but PF does have the benefit of Conan's tutorials.

Bottom-line: using difficulty as a factor in determining which to use is not something anyone should do because they are close enough that it can be factored out of the equation in my opinion. Cost, support, documentation, speed and capabilities are probably what you should look at most.