Don't get too excited, folks. You will get a sort of bonus in Final Fantasy XIII-2 if you still have your Final Fantasy XIII save data, but it's not that big of a deal.
The beginning of XIII-2 brings players up to speed with the events leading up to the new game. With the previous game's save data available you'll get digest scenes with different characters narrating, says Siliconera. Altered recaps, folks! Break out the champagne!
Impress Watch noticed this in a hands-on session with the game. I'm sure they weren't blown away, either.