Ratings aren't accurate because many raters cannot differentiate between observation and opinion.
Also, many assume that everyone is the same kind of pinball player. They are not. Some are just casuals players, some are competition players only, and many are in-between. Their view of the game and hence, the rating is from this point of view. Very few will approach the game with a different perspective (because it requires effort).
TWD is a tougher game for casual shooters. Competitive pin folk will enjoy it much more.
I had one in my house (on loan) for a couple of months.....Did not run out and buy one after it left, but I have nothing overly negative to say about the game.
I am not really a fussy pinball player.