It is not a fair comparision; PGA Pro vs. an on-course cell phone based swing analyzer. The PGA Pro will win every time. I have a Track Man. I have also let people use it on the range. They see all kinds of data and just don't know how to use or interpret it. It is also very dependant on how it is used. I have seen data that people have collected and then I have colected data from the same player. Mine is tiotally different. You must know how to setup and use a swing analyzer for the data to be meaningful.
Even if you can get some useful data from a portable "analyzer", most people will not know haow to use it to make either swing or club adjustments. We see it all of the time with adjustable drivers. A member keeps moving the adjustment to try to correct his ball flight until he gets it to a point where he just can't get the ball in play. We put it back to the original seting and watch a few swings. A small correct in the swing/setup is suggested and the problem is usually solved.
Most of us that have been teaching for a long period of time can pretty much fix you swing or fit your club without the analyzer. It comes from experience and knowledge of the mechanics of the golf swing.
See your PGA Professional, your game will be better for it!