That sucks to hear, I was looking forward to seeing it.
I was afraid that it was too complex to bring to the big screen.
How different was it than the comic?
I haven't really read the comic. I've heard a lot about it and read a lot of summaries. I've glanced through it.
The ending is the same message but done in a different way. Also, since the graphic novel is so big, a lot of backstory is left out, but that's expected.
It was choppy and boring. The key word is boring. I really didn't care what happened. Supposedly if you've invested in the graphic novel, you won't be terribly disappointed. You'll be able to fill in the gaps.
I will say this - I'm going to read the graphic novel from beginning to end. I could tell it's a great story that has a lot of deeper meaning and symbolism.