What is the difference between a Watlow PM6C1CA-AAAABAA and Watlow PM6C1CA-AAAAAAA

Both controllers have the same form, fit, function. The only difference are the program menu options. The PM6C1CA-AAAABAA comes with an EXPRESS program menu for thermal control and the PM6C1CA-AAAAAAA comes with an EXTENSIVE program menu for various control functions including thermal control, motor control, pump control, compressor control, valve control, ETC,ETC,ETC