The user reviews seem to be overwhelmingly negative for COD : Ghosts. Critic reviews are meh, most of them are 7/10. Although i'm sure that more than a fraction of that is blind COD hatred. Personally I like Blops 2 even though the graphics were horrible...
I'll still get ghosts for MP even though i'm sure the tradition of not so great graphics will continue.
When Halo 4 and COD came out last year, Black Ops 2 had a much lower rating than Halo 4.
Although now, Black Ops 2 has managed to hit 4 stars (it was at 3 and a half when I looked compared to 4 and a half for Halo 4) the distribution of ratings for Black Ops 2 has SO MANY 1 star and 2 Star reviews.
In fact, Black Ops 2 has more 3, 2, and 1 star reviews than Halo 4.
I'm not surprised to see Ghosts continue the trend. It seems though that BF4 and Ghosts on Amazon both have low star reviews. Maybe that will change further down the road though as more people get it. Early adopters tend to be the hardcore gamers who are quite critical. Casual crowd really isn't as critical.