Wright, again talking with Collider, said that the film with the original ending actually scored an 81 in test screenings, but thoughts of an ending where Scott winds up with Ramona kept persisting.
As mentioned above, when Wright was first approached to make Scott Pilgrim vs. the World only the first graphic novel had been published.
Michael Cera recalled hearing stories about test screenings with the original ending to EW, saying one scorecard loved so much about the film, but when asked about the ending they just wrote “lame.”
The first ending (Spoiler Alert for an 11-year-old movie) saw Scott choose Knives over Ramona.