It is a very fun game with a good story and good graphics for the WII, but it gets repetitive and the AI is not good.
The game-play is pretty good, but the levels kind of repeat occasionally, and it kind of ruins the story a bit. The playable characters have no limits. They can go anywhere from the land, to sea, to sky. You can have the AI bomb targets from air or sea. You can control them and rule the battlefield too. The bombers are especially fun to play in my opinion. Anyway, the balance is solid. EVERY unit has a counter-unit in every type of terrain.
The AI is the thing that kills the score. Your team-mates are totally dumb. They stand and attack the most worthless puke of an enemy where a rolling fortress will be destroying your army. You have to individually give each type of unit a target that fits their strengths. Once you play through the campaign, you get used to this and can deftly maneuver units to devastate the enemy. The last level can pose much difficulty for anyone though, so be ready.
Overall, this is a great game that deserves to be played despite the cons of it.