What I want to know is...how does this get out the door? I would have thought that a company that large would have a halfway decent QC department...
As someone who has worked in that field, I would feel completely safe betting all of my money that most, if not all, of the major bugs were found and reported by QA, and then promptly resolved as "Won't Fix" by the developers, followed immediately by the deafening sounds of tearing hair and gnashing teeth from the QA department. After which almost everyone in QA was sacked - not because of their flabbergasted complaints, but because almost everyone in QA is contract and are let go as a matter of policy about a month before the game is released.
Never blame QA; they have next no power over decisions and can potentially be fired for voicing anything that resembles an opinion. They aren't even allowed to use the word "should" in a bug because it implies that they know how the game is supposed to work, because as far as the Devs are concerned QA is nothing but a group of monkeys with minimal training to pick bugs and they are treated as such. They can't really fight back if a dev decides that a bug isn't worth fixing.