Hi Charley --
This is all marketing-speak.
Even for a single manufacturer a customer/player needs to dive into the particular meaning of a term. Yamaha "Live!" voices, for example, usually means "stereo waveforms", i.e., the voice data was recorded in stereo and plays back in stereo.
The word "real" has lost meaning entirely.
I wouldn't even bother to compare the meaning of these terms between manufacturers.
All the best -- pj