theres a few things that they skipped that are somewhat important to the show firstly ricks arm being cut off, michonnes rape, and michonnes revenge on the governor (still one of my favorite comic moments). Lori's and judiths death was far more horrific, also didnt like how they handled the death of dexter (the inmate rick kills) they made it rick didnt have a choice as the guy tried to kill him twice while fighting the zombies in the cell block, I preferred when rick simply shot the guy in the face and covered it up as a stray shot when the guy was causing trouble in the group more of a moral grey area .
and the murder of hershels twin daughters by a psychotic inmate, i guess i really like the whole 'man is the real monster' vibe the comic gives off more then the show. Zombies are dangerous but can be dealt with fairly easily, where as every time the group meets another survivor there is always that level of mistrust.
You have to remember that this is on AMC, not HBO or Showtime. And even then I felt extremely uncomfortable with a lot of this in the comics, however the prison war scene was epic because of what you said.