I don't, they're the guys who released an Impossible Mission remake on every format under the sun as a physical title a few years ago hehe.
Angry Birds and Spiderman seem like really random releases though. I still can't help but think Sony must be planning a family angled marketing thing for Vita. When you add them to the likes of Epic Mickey 2, Jak n Daxter collection etc.
That or they just have no direction whatsoever for Vita and are just hoping if they throw enough random crap at it something will stick.