Alske: when people talk about the rest of the year's lineup they're talking about both quality gaming and sales potential. To narrow things down to the sales specifically...
PMD2: guaranteed million seller. It'll be one of the overall top selling games this year and will end up with at least 1.5 mil or so.
FFT A2: won't be a massive blockbuster seller but nothing to scoff at either. Should slightly exceed sales of its predecessor, will probably do around 400k.
ToI: needs, and probably will, do between 500-600k. Again, this'll make it one of the higher sellers this year.
ASH: not gong to be too big, but should net some pretty good sales. I'd look for it to match Blue Dragon's 200k.
Star Force 2: should top its predecessor with between 550-650k. Only having two versions this time is smart.
Layton 2: should, again, beat the first. Established popularity this time plus a better marketing campaign should lead to better front end sales which eliminates some used sales. Can see it doing 700k.
FF4r: sorry guys, but with the effort Square is putting into this and the bar FF3r set, this needs to go plat. 600k isn't going to cut it. The prior ports should have minimal impact given that, as Charlie noted, they really never sold all that much to begin with, and also because of the completely overhauled nature of the game and the amount of additional content. Ff3 was severely undershipped and Square is clearly looking for FF4 to be its big blockbuster title this year to rake in the huge holiday sales. They will not be happy with a subplat performance. FF3's sales weren't because it had never been ported -- even if you add up all three releases of ff4 since the sfami it wouldnt equal the million that ff3 did. The sales were because it was the first authentic DQ-level remake and the expectations would be for a continuation of those sales levels for this strategy to be vindicated.
DQ4: could see this one doing under a million because it's mostly the same as the psx remake we've already seem released and because the portable DQ remakes have always a bit underperformed the console ones. However, the presence of DQ9 should continue to do much for the DQ userbase on the system and that can only help sales. At the least it should do 700k easy, and that'll still make it one of the highest sellers of the year. Fwiw, YSO expects it to sell a million.