That was exactly my point (which I guess you did not get)
If the demonstrator in any of those T2 demos just held down a C major chord with no chord movement and no right-hand it would have sounded as good as that MS demo.


Unless some persons just use their arranger to play one chord and do not play any RH, then a demo with no chord movements and no RH is deceptive and misrepresenting the product.