Which ending is the canon this time?
The Light Side ending is the canon ending.
In addition to the game being too short, there wasn't anything over-the-top or new to this as far as gameplay, besides 1 extra lightsaber and a dash more of violence. TFU 1 (to me) was just an excuse to add a new chapter to the 'Star Wars' galaxy, I don't think they cared much about making a stellar videogame. If anything, the cutscenes in both games combined are probably longer than the amount of gameplay you actually get.
The story itself is getting too drawn out, in my opinion, the story should have just ended at TFU 1. Cloning Starkiller (we don't even know if he is
a clone) just complicated the story and stretched it out. I honestly hope a TFU 3 isn't made, they can just end with Starkiller and Juno disappearing into the galaxy, and we can just assume that Vader escapes Kamino (if he could free himself from the operating table, he can do it again this time).
Although I am interested as to whether or not the real
Starkiller (the template for the clones, which is pretty much a corpse) is still on Kamino...