Someone who takes responsibility doesn't care about QA or whatnot. He/she will just make as good and as much as (s)he can. Some who lacks responsibility needs QA to poke his/her ass to keep production up. The latter one being the one who will work just enough not to get fired even when QA checks his prostate every 5 minutes. The former one doesn't care about getting fired. (S)He can shit on the CEO's desk without getting into trouble. He's responsible and can find a job anywhere.