The attach rate of vita beats 3DS, problably because sony is heavily 3rd party, aways promoting games from thirds and offering games from thirds on PS+. Other thing that help is that the hardware is not that difficult to work. So, some games like rayman, injustice, dragon crows, final fantasy hd remake are not that hard to port over from ps3. 3DS, on the other side...
That is probably the reason why iwata wants to unify the nintendo hardware division. To make a port over easier.
"Hardware design isn’t about making the most powerful thing you can.
Today most hardware design is left to other companies, but when you make hardware without taking into account the needs of the eventual software developers, you end up with bloated hardware full of pointless excess. From the outset one must consider design from both a hardware and software perspective."
Gunpei Yoko
