When they do the analysis, they compare your numbers in several areas to the bowlers that they have in their massive data base.
For example - if you throw the ball at 16.5 mph, you compare to other bowlers who average 205 (or something like that.
If your speed range is +/-0.2 mph, you compare to other bowlers who average 210.
etc.
I has this analysis done 6 years ago, and since I've totally changed my game since then, I really, really, really want to do it again. Probably will when in Reno this year.