The issue there is that you aren't listening to bigband bossa crooner or bigband ballad crooner in those links you posted. Those are links to some specialized versions of them that just have 2 or 3 instruments, not the 10 or 11 the ones using 2 or 3 are playing independently, not like the full one that is playing together.

Have a listen to the full big band in the two links on this page, search for crooner to find them.

http://www.pgmusic.com/bbwin.realtracks.htm

Crooner Ballad BigBand http://nn.pgmusic.com/pgfiles/audio/realtracksdemos/2792band.m4a _BLIZARD.sty or _WINTER.sty style
Crooner Bossa BigBand http://nn.pgmusic.com/pgfiles/audio/realtracksdemos/2781band.m4a _GOLDEN.sty

The new crooners as good or better than previous ones (e.g. swing) IMO. We do have full band demos in the detailed how-to video for 2017 and the page above. They just forgot to out the full bigband videos in that video you watched.

I'll mark this issue 'resolved' since you were pointing out different (non big-band) demos. I'm assuming the ones I posted are satisfactory, if not let me know.

Have Fun!
Peter Gannon
PG Music Inc.