Well there isn't much saying it would do well other than fans saying they'll buy it. I mean of the franchises that are on both portable and handheld, handheld always seems to sell more.
It used to mean an innovative company that led the way in gaming with unique, original, high-quality titles.
Now it means an aimless enterprise that caters only to a shrinking number of fans whose nostalgia keeps them loyal and generous with their dollars.