The difference is much more clear in the comics. FOR EXAMPLE...
Minor comic spoiler ahead
Also, the killing of the "bad" prisoner (no clue what his name is) is much more obvious in the comics. Rick straight up shoots him in the face and makes it look like an accident after the prisoner threatens him and they're temporarily distracted by a walker attack.
In short, everyone is losing it a little in the comics. It is not meant to be a good vs evil sort of comic. It's a look into the dark parts of human nature. It's evil you can relate to vs. straight up psychotic fucked up wackjobs.