Q1. Yes AJ stands for Anti Jam but there are several of their guns that use Anti Jammer firmware so its not just TruCam's that use it.
Q2. Stats are not re-settable at the moment. Due to a chance with memory allocation a past update had to reset the stats. For now just save your stats file and rename it to the time you gathered it and you can compare it to future ones to see the differences
Q3. Programming through the standard controller is basically useless. Just program a config file on the ALP update website and load the config file via USB to load all your settings at once.