Diki, have you even considered the technical aspects to what you have just heard.
It's a Yamaha style that was "untouched" playing back using what was also probably the Tyros 2 Giga Library, and on an OPEN keyboard. Does that not count for anything in your book ?
If it can sound like that with no effort at all and with the sounds of another keyboard, then can you not see how easy it would be to jump way pass a closed keyboard if a premium VSTi was the sound engine ?
I know we have flogged this subject to death, but you have to see the reasoning here.
James