Not to stir up TOO much controversy (!), but try this... IMMEDIATELY after listening to the T2 piano, go to the Roland page and listen to the FantomX pianos (it's in the G70/E80).

The thing that got my complete attention was, in the quieter passages, there are inside chord voicing details that just came to life on the Roland, and were difficult to pick out on the Yamaha. As the T2 got quieter, it seems more distant than warmer, as if the piano was moved back several feet.

This, I think, reflects my experience with the G70. I find the GrandX patch to have a delightful warmth and clarity at lower velocities, without sacrificing sparkle at higher ones...

Perhaps, in a dense mix, the T2 might 'cut' a little better, but the more exposed you get, the colder the Yamaha feels, IMO.

And, to be honest, I wasn't THAT blown away by the XS's, either. But the Pianoteq's modeled rather than sampled sound was very intriguing, with little in the way of phase 'swimming' and a nice, under-hyped sound. This looks to be quite promising new technology...