Basically if you're a fan of Tales of Symphonia, you'l notice within moments of starting the game that this was made on a very small budget, and does its job in a limited way.
Basically this takes place after the events of Tales of Symphonia, and disgards all the main characters and introduces two new ones, Emil and Marta as the protagonists, and some random antagonists you get to know during the game.
Problem here being, the previous games characters are all but useless, Lloyd, Genis, Collette etc, you can't really do anything with them, they join and leave your party and will, you can't change their equipment, they're like there to make fans of the previous games happy.
The graphics are a major downgrade compared to Tales of Symphonia, gone is that quirky style that made the Gamecube game so pleasing on the eye, what we get is a generic 3D JRPG graphic set.
The story is on the weak side, all things considered, if you've played just one 1 Tales game you may enjoy, if you've played better(Tales of Vesperia, Abyss, Legendia, Symphonia, Grades, Radiant Mythology, Phantasia, Eternia etc) Its pretty bad.
The Hi-Ougis(Special attacks) are pretty poor, like they were made on a shoe string time table, compare these with say Vesperias, or Graces and you'l see.
All in all I would call this the worst 3D tales game ever made, and to top it off, it wasn't made by the same people that did Symphonia(On Gamecube) it was a different studio within Namco as they were doing Vesperia at the time.