in its simplest terms: Smf is standard midi file, a format laid down in specification that all keyboard makers sign up to, eg each instrument is on its own track, max 24 polyphony, limited set of voices and effects etc.
Panel memory is a technics easy play feature, each maker has his own version of panel memory, with no agreement or specification how it should be implemented because each maker has his own proprietry operating system. Technics panel memory can control hundreds or parameters that cannot be saved in smf becuase they are proprietry features of the keyboard with no universal specification that other makers would recognise.
It would be perfectly possible to make a program to change a technics easy recording into separate tracks with all the technics features but you would end up with a multitrack recording that could not be played on other keyboards because it would contain features that other keyboards could not reproduce. Even going from 7k back to 6k you would miss samples which would be substituted perhaps with wrong octaves or unsuitable dsps or required controller events which no longer exist or cannot be reproduced, and thus come out sounding quite wrong, let alone going from technics to yamaha or roland.
The reason easy record exists is because making a midi file is more difficult - there are no easy play features in midi files. Smf is extremely limited compared to technics format in sounds, effects, edits and controllers, but smf is the only universal format we have to swap information between different brands of keyboard, and if you advertise the ability to make an smf you have to stick to the agreed spec.