9 is a very good score for a game that does so many amazing (new and never done before) things.
I think the reviewer does a great job of expressing that playing the game with an open mind, and enjoying what it has to offer is the (only) way to experience this title.
Games that raise/change the bar like Heavy Rain and Alan Wake are supposed to open our imagination to what gaming can bring to the table.
Acknowledge what these type of games have to offer artistically, and I am confident you will not be disappointed.