If you're looking at the store on the Vita, yes. If you're on the PS3, you'll want to find the section labeled "PSP / Vita".
Studies show it is humanly impossible to play through all online content in LittleBigPlanet in a single lifetime on Earth.
Don't Forget to Play [Persona 4 Golden] Every Night Before Bed.
Click on the link. Then click on the link that says "PSP Games: Show Spoiler." All the games in green and blue lettering are confirmed to be compatible with the Vita. The Vita/PSP section on PSN is terrible. I don't know why Sony hasn't updated it. Somebody is sleeping on the job.