Look at YouTube for “Tofu Dreg” to see the results of rushed Chinese construction projects.
The wins pay for the failures ten times over. And while everyone laughs at ghost cities, with what people learned there you can build the next real city twice as fast. Effectiveness, getting things done, is more important than efficiency. In the EU and NA we now routinely need to bring military, nuclear or civil engineers out of retirement, because we've built so little that we've lost generations of knowledge.
I am not sure about putting human lives as an operand in win/loss arithmetic, like some typical resource. China is not in a hot war.