Judging by the above pictures, that looks more like Brasilia than Singapore. If you say that Singapore development is, ameneties within walking distance, convenient public transport, and minimal land wastage. Well that is NOT what modern urban planning in China is. Land wastage is HUGE here, (and in the world's most populated country) Go to Beijing or Jinqiao in Shanghai, you could build twice the number of buildings on a plot. Also in these residential areas there is NOTHING on the side of the road except a wall (Chinese people must love walls) for miles! Its built for cars in a country where most people don't own a car. China is going the American route and building an economy based 100% on oil, this will not bode well for the future when oil production peaks, and there are no alternatives as effecient as oil left (wind, water, sun, etc will never be as efficent as oil)
A smart thing to do (so naturally the CCP isn't doing it) is maybe have different planning procedures for every city. HK style for some (SH, Chongqing, Wuhan, Guangzhou ) Athens charter style for others (Beijing, Chengdu, Shenyang) and then see which ones do better. Its much better than putting all your eggs in one basket.