RE: A macro view on metals China has not "embraced" Keynesian policies and they have accumulated huge amounts of capital... so your conclusion "the bust will be greater" is based on flawed premise.
It is true that the Chinese have tried "successfully" to slow an overheating economy realizing that the growth was too rapid.
This does not mean that they have 'embraced' anything.
1) China is not hampred by politics the way that Western democracies are. They can move quickly to make the changes that they think are best for China.
2) China has almost no debt in relative comparision to the US and Europe
3) China has embraced "Confusionism" .. once again.. the leaders surround themselves with the smartest people they can find and make the best decisions for the country.
China has done nothing but make really smart moves on the global economic chessboard over the last couple of decades.
It is highly unlikely that they will not continue to do so in the future.