Though, the RM Pro has 229 ppi vs. the 300ppi for the scribe. So for black and white text, the scribe still has a small edge. But it would of course be cool, if the scribe eventually gets color at 300ppi.
In practice the resolution doesn't make a huge difference. (I've got both 300ppi and 207ppi BW e-ink devices and the antialiasing/gamma strategy makes more of a difference than the resolution.)
But a bigger difference is that Gallery 3 uses CMYW pigments; there's no black pigment, rather the microcapsules themselves are tinted black on one end, so the black ultimately ends up a little impure. Also there are only 4 shades of grey for antialiasing rather than 16.