I really wish my post hadn't been truncated by the forum that way. I guess I'll just write it out here then. Pew Research is stating that Muslims will outnumber Christians by 2070.
However, the Baylor Institute for Religious Studies is arguing that Christianity in China is exploding far past current estimates. They've been able to assess, using some very creative methods, that even top government officials and their children are becoming Christians. But due to official ongoing Chinese suppression of religious believers in China, most are keeping it private.
Baylor is predicting that future Christian growth in China will offset Pew's latest study. Which, of course, is very interesting.