Par4QC There are exceptions, but I could not tell you which products are knockoffs and which are authentic. But real brand products are sold in China at a much different and lower price point than they are in the west. Occasionally, someone will give access to Chinese pricing (with some markup I assume) and ship from China for product brands that are authentic. Just priced closer to what Chinese consumers pay than what westerners normally pay.
I somehow doubt Taylormade does however, their products are probably limited to high end retailers catering to corporate heads and government officials as I doubt even middle managers can afford to golf. But, as you suggested, it is possible that they role off of the same production lines using the same specs and materials.