The easy answer. If you don't like Road Show you won't like this game. Essentially it is Road Show II. Also, the game is very simple in terms of ball time (at least from my experience) I prefer much faster games. Very unique concept and the game is way better than Wizard of Oz and Hobbit but you still suffer from longer ball times if you prefer speed and difficulty.
The ratings don't make any sense honestly, it's all about what YOU think is a good game. I can't stand some of the higher "AAA" games but I love crap like Police Force!