User blog comment:Jimeee/PS3 release dates for Dragonborn, Hearthfire and Dawnguard - Euro Update/@comment-5.20.184.182-20130204212307/@comment-26474238-20130205030419

"The game was ported. Their was no 'from the ground up' here, it was made for one of the consoles and ported over, like all games."


 * Not for the PS3. After the exclusivity deal with Microsoft, Sony refused to share their source coding, resulting in Bethesda being forced to build the DLC's from the ground up using guess-work.