They don't sound very good. But all they do is publish the game right? They don't have any effect on the game itself?
They are a publisher, but they take chances on games others wont, such as Demon's Souls which Sony refused to publish outside of Japan among other games.
Plus D2:DKS has been out and completed for a while... Atlus is just the publisher, IF they are the publisher here... who knows it could be Atari, Activision, EA, Microsoft, etc etc etc