Overall, the movie does a decent job of staying true to the comics. Some scenes might be different, but it still captures the main ideas and the charm of the original work. The visual style and the humor are pretty similar too.
The Scott Pilgrim movie is moderately faithful to the comics. It keeps the basic plot and character developments intact. However, for cinematic purposes, there are a few alterations and additions that don't significantly deviate from the comic's essence.