I am not sure what your question is, but you can see if you are able to play a game on your Vita if you check the download list on your Vita and see if it allows for the psp game or see if you are able to transfer the game from ps3.
You can play Yggdra Union on the ps vita. --- Pansexual master race.
So I'll be able to play Dust Force and Yggdra Union that I bought from the PS3 store on it? --- Marcus is the answer for anything except "best unit who isn't Marcus," but even then he is a strong contender. - PokeAMon
I heard you energy/health thing is replenished when you level up in the PSP version of Yggdra Union, so I bought it. The GBA version is kind of like "don't make any mistakes or you'll be hurting for a loooong time" so I never finished it. --- Marcus is the answer for anything except "best unit who isn't Marcus," but even then he is a strong contender. - PokeAMon