Every new stern is not going to be great just because it is a new license. Some are going to be only average, and that is okay. If you are a huge fan of both Pinballs and TWD it will probably be one of your favorite machines. If you love pinballs but only like TWD show you're probably not going to see the game through the same rose colored glasses.
If you are basing your buying decision on how great a huge fan of the show thinks it is, and you are not a huge fan... you will probably be disappointed.