Wow. Keep telling yourself that buddy.
And, do you care to say what else is different, rather than omitted, from the movie, which none of us have seen.
As far as we know, other than the opening montage, the movie opens up like the book. Manhattan's Mars sequence is supposedly intact. Rorschach visits Moloch several times and is captured by the police. Nite Owl is impotent, has a dream involving nuclear explosions, clears his head by dealing with a tenement fire, and has sex is intact. Rescues Rorschach from prison. The two Bernies are intact. Etc.
Yeah, things have been omitted. The Black Freighter for one. The fighting lesbians. And likely some stuff here and there. The first two hours is going to play like a very faithful adaptation of WATCHMEN. Some deviations and flourishes here and there, but plotwise and dialoguewise it will match up with issues 1 to 11 fairly closely. And the latter half of issue 12.
Other than perhaps SIN CITY, there's really not been a comic adaptation that's been so faithful. And that's even including non-superhero material like GHOST WORLD, A HISTORY OF VIOLENCE, ROAD TO PERDITION, and AMERICAN SPLENDOR.
And, certainly, I think it's fair to say that it's a much more faithful adaptation than BLADE RUNNER which only ran with the core concepts and a couple of lines of dialogue. Heck, it's probably closer to LORD OF THE RINGS in terms of faithfulness, which certainly had it's share of deviations, omissions, and invented subplots.