Made in America cheaper than Made in China?

If true, this is an astonishing turnaround.  From the Economist.

“Sometime around 2015, manufacturers will be indifferent between locating in America or China for production for consumption in America,” says Mr Sirkin. That calculation assumes that wage growth will continue at around 17% a year in China but remain relatively slow in America, and that productivity growth will continue on current trends in both countries. It also assumes a modest appreciation of the yuan against the dollar.