The Star Forge is nothing more than a big Death Star copy-cat. It's fun, but a bit annoying.
Malachor V is the place of the last massacre in the Mandalorian Wars. It is a place that has tons of evil, and is where you lose your connection to the Force. It is the secret base of the Sith Order. It is...nightmarish.
Otherwise, they are EXACTLY the same. You still have 100 Dark Jedi rushing towards you, and becoming an uber-Jedi/Sith, you smash them all. The difference is that in Malachor V, you are the only person in the party (theortically making difficulty harder...except you wasn't), and...there were more classes from which to kill. The civilian Sith Assisans make a nice touch, enhancing an already creepy setting.
I also have to say that they did do a fine job with the Sion will-breaking minigame (altough more improvment may be necessary, the concept was innoviate), and there is always Kreia's revalations. The nihlistic ending to the game, where nothing you did really mattered, was really...fitting...given Kreia's hatred of the Will of the Force. The game ended as it begun, on a dead planet that is about to explode, with broken corpses scattered all over, and your future in doubt.
and you're point is...?
Point is, it got a better concept, just like the rest of TSL, and I felt it was actually done pretty effectivly. That's a plus in my book. The Star Forge is a great level, but Malachor V has the better story, and I like stories.
It would be a good story if you could've played in the wars,like an intro to the game.But NO,you just jump into the action.And i hate when they do that to games with great potential