what does this game add because might just need to be a vita for this
I'm not sure if this is everything, but this is what I've found listed.
New character/s.
Additional voice over dialog.
New animation cutscenes.
More Personas, including new Ultimate Personas
New areas, such as a beach, Okina City and a ski resort.
New events, such as a halloween event and a skiing trip.
Yu and his friends now have motorbikes to get around various areas. Motorbikes can be used in battle (like a follow-up attack it seems)
Tag team attacks.
Some menus are now in blue.
The ability to participate in a quiz show.
Battle Costumes.
New Garden and Bug Catching features.
The ability to call for help via WiFi when your party reaches critical state
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http://myanimelist.net/animelist/swordz9