Hardly surprising that the 3DS is not selling particularly well with just very few (good) games hitting the platform in the West. I remember when they claimed that they were aware of that problem and that games would come out that would push sales in the West, but quite frankly I'm not seeing too many of those.
The next six months actually look pretty rosy for the 3DS in terms of software, but there's caveats to basically every title.
It's Kingdom Hearts, but after so many shitty spin-offs, will anyone outside the fanbase care?
It's Castlevania, but Castlevania games have never really been big, and the hardcore Castlevania fans don't seem interested in this take.
It's Mickey, but it's a 2D sprite-based sidescroller.
It's Scribblenauts, but a gimped version compared to the Wii U and PC versions.
The rest are all Nintendo titles, but whether Luigi's Mansion or Paper Mario can move systems isn't something I'm willing to bet on. NSMB2 will probably move some, given the right marketing.