"Can you show me your source?"
I am the source. And if you don't believe me : http://blog.eu.playstation.com/2013/10/15/flower-flow-escape-plan-and-sound-shapes-coming-to-ps4ps-vita/ =P
I don't think Journey will be ported on vita. It would be a waste. To me, it's the kind of game that must be played on a big screen. Plus, I don't think it's as easy to port as flower and smaller indie game. I remember the game having some aliasing and minor framerate drop on ps3, that would probably be worse on vita. The game would be ported on ps4 soon, that's a given since it sold so well on the psn.
Puppeteer on the other hand... I could see this title being ported on vita easily. There's some aliasing on ps3 version too, but nothing that the smaller vita screen couldn't correct.
Sony responded very well to my past wishlist with Fez, Flower and Dustforce. I almost did not believe it when announced.
So far on my current vita wishlist I have :
The world ends with you solo remix.
Fez release date.
Puppeteer.
Don't starve.