I'm with you 100%. I was kinda shocked, actually on the results. I initially did this as a test for a friend, and decided as a lark to throw the iPhone in just to see, then based on the results, ended up doing a video, with same location, same time, etc.
The bottom line is we can only leave the house with so many cameras. The GoPro is always going to be versatile because you can place it anywhere, so it's easy to tote along with your phone. The Pocket Cam has good audio, and terrific apps from DJI, but it's nearly the same price as the Mini drone. You tell me--which would you rather have?