There are some minor improvements in this game such as new story mode mission, game plus, wii controls, small amount of new items and you can use the NPC(Non Playable Characters) unlike the ps2 version. The only small downside is no wide screen and small display window that doesn't show all the elemental weakness unlike the ps2 version. In all, the Wii version is far superior in every way. The controls are fine in this game. You tilt your control horizontally and use controls similar to Paper Mario or New Mario Super Mario Brothers. If you play the ps2 version, there's really no need to replay this game. The new story mode feels tack on and just add additional hours of gameplay.
This is type of game you either going love or hate it. In this game, you control a girl who can gave ghost life in the real world, but only in limited amount of turns. Some people hate it since it kinda encourage level grinding since you can't dominate with one character and you need a full developed party in order to succeed. While others enjoy it due to unique game play and it encourage strategy. Of course, like any type NIS game you can power level and throw the whole strategy thing out the window. Even if you hate doing the long complex task of power level or level grinding, you can easily swipe else save and play new game plus with it. I think I still have a save for it if you want it.
If anyone is getting this game, there's a eguide for ps2 version. Although it lack exclusive Wii content, it is still really useful . Personally, I avoid everything else and use the failure fusion guide. Special thanks to ZekuMusashi from gamefaqs for providing the guide.http://www.sendspace.com/file/c3guiw