But to deal with your notion that God does not have the victory without Universal Salvation, there is a lot more to God winning than Heaven vs Hell.
I hope so, if He has designed the universe in such a way that the majority of the cteatures He put in it, and whom He allegedly loves, will be tortured forever. Hard to put a positive spin on that, isn't it?
This is not, for one big thing, a dualistic proposition. This is God, and his particular creation, and his glory, for which all this 6000 year-long (or 15 billion, if you prefer) process is about.
The glory of torturing your creatures forever, because thery've offended you. Doesn't seem all that glorious from our perspective, does it?
It is not about who wins those God made for lesser purposes.
’Tis all a chequerboard of nights and days
Where Destiny with men for pieces plays:
Hither and thither moves, and mates, and slays,
And one by one back in the closet lays."
Except in this case, it isn't back in the closet, but into the fire to burn forever.
(The notion is absurd that Satan will, from his place in eternal conscious torment, consider himself to have won anything, regardless of how many "others" are "there".
Not as if Satan is anybody special either; God created him and can as easily uncreate him. He was created as a Bad Guy, and his fate was certain from day one. Imaging Satan as a little evil god competing with God is ridiculous, God could have flicked Satan aside at any time, and ultimately does.
You're still stuck with the idea that God does something that would be considered evil in any human being, for motives that would be seen as twisted and sociopathic in any human being, and that it was part of His plan from the beginning to do so.
Sorry mate, I ain't buying it. "Father forgive them. for they know not what they do" replaced by God taking satisfaction at the damned writhing in flames while He and the blessed point and laugh. In a word, "No".