[quote name='Blaster man']I thought Final Fantasy 13 was bad but in a different thread people said 13-2 is better. I'm mildly interested in how the story turned out. I read some minor spoiler elsewhere that they leave it with yet another cliffhanger like there will be a 13-3. True or false?[/QUOTE]
XIII-2 is essentially an easter egg hunt in the universe of XIII. You revisit old locales and collect powerful weapons, catch monsters, etc... Much of the game's enjoyment is due to that recognition of the previous game. So if you didn't like the first game, it makes little sense to go on to the 2nd merely because it is less linear. If you didn't like the battle system or the characters, I can't say XIII-2 does anything to change that. Most XIII fans would say XIII-2 is poorly paced compared to XIII, and threw the story out the window similar to what X-2 did to X.
It's just a fun little RPG with tons to do. It's not epic or in anyways more polished than the first game, but if you're a fan, I think you'd enjoy it. Full review in my sig, by the way.