Ok, so here's an example of some useful information that my game golf is giving me (other than that I chop a lot - but I knew that already).
http://www.gamegolf.com/player/coalesce
I've just changed the driver in my bag, so I now have stats for 2 rounds with each driver - and it is enough to start to quantify in numbers a pattern I'd already noticed on the course.
drivers.jpg
So that shows that I can hit the Cleveland driver further than the Cobra, but that my average distance with the Cobra is higher. The reason for this is that I wasn't hitting the Cleveland that well, so had a lot of shorter mishits.
Now we move to the analysis section for each driver
Cleveland:
cleveland.jpg
Cobra:
cobra.jpg
The first stat I'm interested in is fairways hit. I am more accurate with the Cobra (52% compared to 32%). However I miss left with the Cobra, and miss right with the Cleveland.
The game golf gadget can't show this, but I have a habit with the Cobra of pulling the drive left - it goes in a straight line, but 15-20 degrees left of where I aimed. With the Cleveland, the misses right were generally due to a slice, or to adjusting my aim to the right to compensate for a draw, but not getting the draw. The other noticeable difference between the two drivers for me is the ball flight - I hit the Cobra high, and the Cleveland comes out much much lower - hence the extra length I guess.
What I think this all tells me is that I don't have the optimum driver for me. Game Golf is not going to be able to tell me what the optimum driver is, but it gives me some quantitative stats to help me see what's happening. However other than hoing, or going for a fitting, I'm not sure what the next step for me is...