How do we know its really a S950? its only a picture? Could be a Tyros4 also, just sayin'?..
It doesn't sounds like a Tyros... I tend to believe its the s950.
Plus, the styles are not Tyros' styles.
Anyway- what I like about this demo that it is NOT made by Yamaha. It is made by an ordinary player, not a pro. So you can hear what the keyboard /really/ sounds like. I find that the "official" demos from Yamaha are to... hmmm.. "factory"-like.