This sounds like what we called several years ago: electronic organ. So I would not compare/contrast it to other portable keyboards/synths/workstations... I would compare it to something like:

Yamaha:
http://www.yamaha.com/cgi-win/webcgi.exe/DsplyModel/?gELT00002AR100
http://www.yamaha.com/cgi-win/webcgi.exe/DsplyModel/?gELT00002EL15


and other companies