The notion that Pitchfork alone can push a band into "stardom" is frequently cited, but demonstrably false. Arcade Fire and Clap Your Hands are but two of dozens of albums that Pitchfork has raved about in the last year.
How come there hasn't been a similar effect for Serena Maneesh, Wilderness, The Boy Least Likely To, Caribou, Isolee, Edan, Six Organs of Admittance, Castanets, etc....