The comic has always prided itself with the concept of ANYONE CAN DIE/ NO ONE IS SAFE. I feel like the show wants this concept but can't reach it. Normal TV and Movie rules apply. Carl after this episode is now Invincible, as is the baby. Maggie (if she takes the caretaker role) is also invincible. I will be SHOCKED if the characters ever even take a step inside of Woodbury now. Most likely there will be no Woodbury entertainment, the Woodbury army is essentially 6 guys with a Hummer. Tyreese will never exist. I'm not going to be surprised if the show eventually gives up what the cause of the zombie outbreak was, only because thats the type of thing a tv show would reveal in a season 4 or 5 finale. The writers don't care what the comic readers (us) think, and it's easier for them to just kill off someone then write them a story. T Dawg could have very easily been turned into Tyreese, Woodbury could have very easily been more thunderdome and less Pleasantville, and Lori could have been likable and not written as a moron. At this point I've completely stopped myself from wanting the comic parallels, were not going to get them. Give rick a machete instead of a hatchet, why? because it will anger the comic fans and its change for change sake.
Sadly, people who adapt movies/shows from comic books don't try to gain the reader's interest. They try to gain the whole world's interest. People don't read comics so they don't know what the true story is anyways so they are free to do what they want because no one will no it's different than the comic.