Ahh there are two titles missing from the OP that I know of,
One is Mad Blocker HD:
MadBlocker Adventure from Open Emotion. Mixing tile games with RPGs has given the developers room to create something rather different. In the game, the Fluzzles have been sent out into the world by the mysterious stranger to defend against the evil Mokes, who have taken over the majority of the world. Each region of their world is guarded by a Moke Lord, each with their own distinct powers and abilities. It's up to the Fluzzles, using new found powers and their new pet creatures to take on the Mokes and bring peace back to the land.
http://www.youtube.com/watch?v=3qcBQBvwLG4&feature=player_embedded
And the other is ChronoVolt:
ChronoVolt from Playerthree, given that Sony never bothered to ask Archer MacClean for a sequel to Mercury we'll have to settle for this, a fiendish 3D puzzle-platform marble game in which players guide their Chrono Sphere through the twists, turns and traps and hazards of Escher-like arenas. Expected for a June release.
*Edit* Beaten on chronoVolt
http://psp2roundup.blogspot.co.uk/2012/04/three-cool-vita-games-to-watch-for.html