Successful and notable director? Check.
Young, hip and fun cast? Check
Killer soundtrack and mind blowing visuals? Check
Sounds like the recipe for success, doesn't it? Scott Pilgrim vs the World had all the pieces to be a cinematic success, but instead of being a K.O. in the box office, Scott Pilgrim vs the World failed to save the princess or some other relevant video game pun.
(this is where Alison Pill screams)
WE ARE THE UNLUCKY ONES 1, 2, 3, 4!