2012 Vita saw an exclusive Uncharted, Assassins Creed, Call of Duty, Fifa (since launch its only had redskins) as well as the likes of Little Big Planet and Gravity Rush.
2013 it saw Soul Sacrifice, inferior ports of Jak and Daxter and Sly Cooper then a large summer drought before Killzone 2 months before the PS4 launch and tearaway sent out to die.
Actually even in the West the 2014 software line up is better.
Football Manager marketed right could shift a lot of hardware. It actually works with the PC and Mac version and has full 3D match engine. 2 key things making it the definitive portable version and Football Manager is a huge series in Europe.
Tecmo-Koei stuff along with other Japanese translations again also makes a much more interesting 2014 lineup even in the West.
I don't think its as simple as year 1 vs year 2 decline was this. 2013 was so bad for the Vita that I think much more of a drop this year is unlikely.