It doesn't deserve such a low score...
There are new items: an Abattoir, Blacksmith and Hospital amongst a host of embellishments but thats it. In fact there are just 11 new items - 8 of which are embellishments, 3 of which are signposts! Not very impressive, no? There are 4 miracles which are good though. You can turn the hordes of skelatons into fluffy rabbits, unleash a pool of lava, bring the dead back to life and spawn an undead army. These are good work on behalf of Lionhead. You get to play on 4 new lands that are quite large. Well, 1 land is just an introduction so your playing on 3. It is therefore short and the storyline is rushed. However, I feel that this is much harder and challenging to complete compared to B&W2. You also get a new creature! The tortoise! This is probibally the best aspect of the game. If there was 1 thing that was wrong with B&W2, the lack of creatures certainly was up the top.
However, it's definatly worth buying. Don't expect the same value for money but it is certainly very challenging and what content is added is certainly entertaining to play with.