8 months ago Paradox had an atricious QA for their games at the start. Hearts of Iron 3 has been a huge bugfest when it started.
However, I think SotS2 was the straw that broke the camels back. I say this because lately I haven't seen any bad paradox games at release. Their newest large game, Crusader Kings 2, is playable almost bug free right out the box, and with patches 2 months after release there are no bugs I see.
On another hand, they have a mod for their EU3 game called Magni Mundi or something. That game was meant to be out early this year, it has not. It has not because Paradox put their foot down and said "Game too buggy, not ready for release." Now they don't know what will happen to it, whether it is scrapped and said with it explicitly saying "BETA" or whatever. What they won't do is allow to be released fully because it doesn't pass QA.