Goes without saying that the comic is better, more real and more brutal, nothing can really compare to the original, but i'd say they did a very good job putting it on the screen from a comic.
And i say this even if they took some liberties with some characters and changed some storylines. At least we're at the prison (the pose of cancer) now at Season 3!
And we will also meet The Governor in S03.
Compare other attempts at putting something from a comic or videogame to the screen. Not as successful.