I don't think returning to what we had before is victory. (Not saying it was bad, it just made the war meaningless).
I don't think anything where we have higher tariffs on imported goods is a victory.
I do think the outcome can very possibly avoid those two things. I picture a modest reduction in some tariffs for goods exported to China over what they were in 2016, and our tariffs returning to what they were.
However, no Trump supporter can seem to point to what they are looking for. Just vague statements about fairness and intellectual property. Let's face. Trump probably doesn't know either. This way, if there is progress on any front at all he can claim victory.