Ziggy,
I believe that Dreamer point is the following: If he is buying a new keyboard to replace all what he has, then the Genesys would be a strong contender especially if they can do something about the Piano sound (I have not heard it by the way).
But Since he already has some very good quality keyboards and sound modules, he does not see in Genesys the justification to pay thousands of dollars to get that new keyboard. Notice that the impression that he got about Genesys is that it is closer to SD1 which he already owns. That is nothing against Genesys.
I think that the real criticsm was against Tyros because he does not have a yamaha keyboard and an addition of yamaha keyboard will complement his collection. However, he was not impressed enough with Tyros to add it.