phaolo: *SPOILERS*
Uh, no.. the original ending is quite opened about Judgement Day..
Breja: Not really. It left them the option to do the third movie by saying "nope, it didn't work after all", but going just by the second movie, the only interpretation that makes sense is that it worked.
Well, that's why it's an open ending..
It makes you hope that it worked, but you cannot be sure.
Both possibilities would be acceptable as theory 1 or 2.
That's the beauty of T2.
If you're saying that you only like the immutable past theory, that's another point.
I liked that option in T3, but the movie is too bad to be considered canon by me :P
Breja: The "alternate ending" is not really an alternate ending. Army of Darkness has an alternate ending, This is just an unused epilogue.
*SPOILERS*
What do you mean?
In AoD, one ending is good (perfect) and the other one is bad (interesting, but too anticlimactic).
In T2, one is "hopeful" (but uncertain and great) and the other is good (but crap).
So.. both are alternate endings.
Randomly cutting final parts is not the same as creating a different ending..