OK,
I moved my G70 over to the same sound system as the Fantom X7 is plugged into through a pair of Behringer B2030A powered monitors and with no additional EQ, just flat! Here's the facts:
I put the Fantom on the first piano patch which is called "Ultimate Grand". I put the G70 on it's default Piano patch "Grand X".
From the softest played notes up to the hardest hit keys up to C4, they sound exactly the same. From C4 and up, the G70 becomes better to my ear. The soft through hard notes played on the fantom Ultimate Grand don't become as bright at the hardest hit levels, where the G70 will actually sound a bit more "live or real" when played very hard. I'm guessing this could because of the way they set the velocity levels for both. Maybe the Fantom can "get there" as well but not factory out of the box. So,
those that say the fantom piano and the G70 are not the same.......my opinion is that the G70 is even better out of the box, but maybe the fantom can be made to sound as good. Also, if you install the ultimate piano card from Roland into either board, this piano might even be more what you like. I however, really like the pianos in both keyboards stock from the factory.
George Kaye
Kaye's Music Scene