That's my PS3 world, imported into the Vita. they're Cross-save compatible. Here's the Cubedon flag on my house.
While the Pocket edition does have infinite worlds, the Vita version has many features the Pocket edition doesn't. The easiest to see right away is the Hunger and experience bars.
And you can see the netherwort. Pocket edition doesn't have the nether, so no nethwort.
Here is my nether portal and redstone based cobblestone generator. You can't build such a generator in the Pocket edition, no redstone functionality. It doesn't even have buttons or pressure plates to open doors.
Neither can you brew potions or enchant items.
Also the Pocket Edition's UI and controls are not optimal, the Vita edition having the same control as the PS3/PS4 version. And if you already have the PS3 version, the Vita version is cross-buy, meaning you don't have to pay for it.
I used qcma to transfer the photos. You start it up, and then use Content Manager on the Vita to actually do the transfer.