Originally Posted by Zerimar Nyliram
No, she was not. The two story lines are incompatible: where one occurs, the other does not. Leia could not possibly have been referring to the DLC that continues from the dark side ending to the first game because the entirety of TFU2 continues from the light side ending to the first game (but branching off from the dark side ending to the second game).
Leia means that Luke was killed on Hoth in this second apocryphal story line.
I was always under the impression that the two dark side endings were part of one story, that Starkiller was both Lord Starkiller and the Dark Apprentice, that they were the same person, as in Galen Marek went to kill:
-Jabba the Hutt's Rancor
-Obi-Wan Kenobi (as Old Ben Kenobi and Spirit)
Thereby ridding the universe of any possible rebels, allowing the Galactic Empire to reign supreme.
But what you are saying does make sense.
Then again, maybe Lucasarts just made a mistake, and they referenced the past DLC lol.