Not the best GOW, however a great game
I think that the game deserves a score of 8.5.
Compared to the previous GOW games, GOW3 campaign is the least interesting: this is disappointing, if you consider that GOW3 is the final chapter of the serie.
The worst aspect of the campaign, however, is that it is too easy.
Talking about the multiplayer, the game results faster than GOW2: I actually find GOW2 multiplayer the best, as movements are not so fast, and this forces players to be more tactical than jaunty.
Another weak point of the multiplayer are the maps: it is a shame that old maps are not available (sure they will be later, by paying...), and new maps are nothing special.
GOW3 is a great game, anyway, it does't improve the formula and it is a disappointing end of the franchise.