Wait, what? I'll forgive you for the moment, since when the time the second post was written, the US economy was in recovery, but no one knew it. This quarter marks the 4th quarter in a row that GDP (and therefore the economy) has been on the rise. Sure, we're coming out of a trough on the graph, but it's still economic growth.
And then there's China. China is by no means doing better than us. Their GDP is indeed better, but their GDP
per capita (per person) is by no means not. Their GDP per capita - that is, their GDP divided by how many people are living there - is only $7,400 according to the
CIA World Factbook (China). The US's GDP per capita, on the other hand, ranges all the way up to $47,400 again according the
CIA World Factbook (US) - significantly better than China. What this translates to realistically is better living conditions and overall better quality of life the higher GDP per capita is. Essentially. There are countries that break this rule, but they're few and far between. Norway, for example.
TL;DR: China's economy is by far not better than ours.