One word... Epic
First the motion controls - they aren't flawless and the more advanced moves(like the 180 turn) only work half the time. However, the basic control scheme of turning left or right and going up or down works pretty well. Playing the game I have decided to stop using the more advanced moves that rarely work, so it takes my dragon 2 to 3 seconds to turn around instead of half a second. Not ideal but this doesn't ruin the game.
The camera is the other weak spot in the game, with the lock on feature sometimes sending your camera spiraling out of control. Is it ideal for a game, no, but limiting the use of the lock on when in a large cluster of soldiers greatly reduces this problem.
The gameplay is simple and at times repetitive but every single level has different objectives that keeps the game relatively fresh.
If you take into account these 3 things the game would probably only be a 6.0, but so many of the weaknesses are canceled out be superb presentation, both with graphics and audio. The music used in the game is amazing, with a perfect blend of intense war and slow haunting music. The game is just great to look at, with so much action constantly happening all around you. The battles, maps and boss battles are epic in size and the sun's reflection on the water is one of the best lighting effects I've ever seen in a game.
This game may not be for everyone but if you are a PS3 owner give it a chance and rent it, you may(like me) be pleasantly surprised.