In my own opinion, all comes down to the Player, the keyboard (any brand) can have incredible sounds, features and resources that the player may or not use, but, there is one thing, you must play with Feeling.

I have hear players like Hector Olivera and other that I did hear live in the Phoenix area with the same (expensive) instrument and the results where totally opposite, one sounded great, the other, well I rather not say, needless to say, is NOT the instrument, is how is been played.

I am NOT judging anybody, the Audya demo has great sounds, but, in my opinion, the player (very good), needed to play with more feeling, more expressive, a song like this, I would consider playing it at a slower tempo, other wise sound like you are in a running competition and is hard to put feeling in something that fast. My comments are only my observations, I have no intentions to offend anyone.