Golf, China, English, Twitter

The WSJ has an interesting article on the golf course industry in China. I discovered this via a link in FT's Beyond Brics which asks:

"Golf in China - under par?"

Which in turn leads me to ask this question:

"Why does "under par" or "sub-par" mean something is less good or less-than-average when in golf it means the opposite? In a reference to an article about golf, no less"

I suspect that Twitter was invented to answer this very question.