When people look back in 10 years I suspect that this will be the main story, and the China angle taking a large backseat position. When people make bold predictions and the opposite happens then that make for a better story than details of geopolitical results.
This does put egg smack on the face of a lot of people though so I fully expect Trump’s role to be downplayed as much as possible. I’m already hearing and reading Trump had little/nothing to do with it but that’s ok, peace is more important than credit, and the American people can judge for themselves what happened.
...Except for his continuing antagonism of Russia (A nuclear power that, unlike North Korea, is capable of a global nuclear war) in Syria.
Which, I suppose, nobody expected, but for a different reason.
I think Xi Jinping is quietly going to allow Trump to take the public credit. And meanwhile Xi is going to build a new bridge into Korea based around Capitalism with Chinese characteristics.
I think we'll need to look back and reflect in 10 years to see if Korea has moved closer to USA or closer to China before the real credit can be given.