Expertise please

Someone with the relevant medical knowledge please explain to this bizarrely angry conservative the difference in the injuries between the fireman who came out of a coma today and Schiavo. I know the end result is that Terri wasn't going to recover and the patient in question fortunately did, but I don't know how to explain it. While you're at his site, check out the clip from last night's Daily Show, which is why I was there in the first place. Funny stuff.