The movie version of Scott Pilgrim doesn't cover everything from the comics. There are certain parts and nuances that didn't make it into the film, but it still manages to capture the essence of the story to a large extent.
Scott Pilgrim was indeed a comic first. It had a dedicated fan base from the comic world before branching out into other entertainment areas. The comic's success paved the way for its expansion into various mediums.
Sure is! Scott Pilgrim originated as a comic book series and later got adapted into other forms like movies. The comic has a unique style and story that appealed to many readers.