At 23:00, he falls short of calling KETRON by name as he mentions the advantage of Audio styles - mentions the fact that ...

...Yamaha had attempted Audio styles 4 years ago but came across 2 major set backs [1- delay in styles as you transitioned between say arranger A and B and also 2 - noticeable variations in the drums, something that could be fixed by boosting memory. To resolve this, Yamaha chose to perfect it's Midi drums instead which offer more control over the individual drums, unlike another manufacturer from ITALY, whose name he will not mention that has had greater success in Audio styles with this technology...

Wow .....