The trees looked very similar to DP's at first, because the videos were blurry and you couldn't see the details as well, and they have flat colors in similar places as the DP ones, so it looked like them. Now that I've seen a high quality screen or two, and have even devamped the trees, I can see the difference from the DP trees now. The main reason is that they use a pallette similar to DP. I hope Game Freak changes that, so less comparison could be made, and just so it could look a little better in general. It would look great with the same pallette anyways though.