User blog comment:G0LD3NF1RE/Dawnguard encounters issues with Playstation/@comment-4975504-20120902162033/@comment-4975504-20120903095221

I don't like that word "if", it's a lazy man's tool. What's done is done and Bethesda chose to lean towards the PC/Xbox side for their game. IF they designed it for PS3, the xbox would game would probably have to use like 10 disk for the entire game, like LA Noire, if it was designed for the Xbox it would have no problem to be on one disc. That just tells you how different the consoles are.

Here's a analogy for the situation:

You take the US White House (TESV) and build it in that big garden in Washington DC (PC/360). Then you're told you have to build the same exact building (TESV) in Downing Street Estate (PS3) a tight place with no room and many obstacles in the way, you're going to have to redesign and completly change the way the The White House was initially designed for to fit the requirements needed. Now you have to go back to the big garden and change the original White House so they're both the same. The big garden still has plenty of room for an extension (Dawnguard, Hearthfire ETC) but Downing Street Estate is maxed out to it's limits.

--I would go on with this, but I think you've got the point.