Left out a few things I wanted to point out to those who are reading the topic and wondering how FFXIII-2 is different from FFXIII.
Linear issue - You can tell Square Enix worked on this because there are a lot of people to talk to now in the game, thus giving it a better RPG feel. As far as moving around the map goes, it's more or less the same. Except it's not just two paths, and you know one will always lead to an item. For XIII-2, you will still ultimately have to go to the destination on the map, but before you do that, you can go in 4-5 different directions to hunt for items. That part is pretty sweet.
And of course, I have my usual DLC gripe. Final Fantasy XIII-2 Coliseum DLC Coming Next Month - PlayStation 3 News at IGN
F-off DLC! No, I don't want to buy Serah's Azazel (or whatever it's called weapon) for 80 points ($1 dollar). No, I don't want to pay you EXTRA money for the DLC Coliseum where I can add Lightning and other previous FF character into my monster slot party. Nor do I care for paying extra to see Noel and Serah wear different costumes throughout the game.
Yes, I know these are optional but it just bugs the hell out of me. We paid $60 for this ($80 for the Collector's Edition). What ever happened to bonus items you can unlock for fun? Why do we have to pay you more money for it? Whoever invented the idea of DLC needs to die now. Yeah, I said it. /rant