Emergent <i>vs.</i> Islamic idolatry...

I agree. I think that Islam beats Secular Humanism hands down. Not even close. In Europe, where those appear to be the only two significant choices you can see that the trend toward Islam is not slow.

I think this is true because Islam makes more sense than Secular Humanism. As messed up as their theology is at least they believe that there was a Creator God and that humans have a purpose beyond their own pleasure. This leads to people having more children, being less willing to assimilate, and more able to intellectually defend their position (they are not in the awkward position of defending the idea that life happened as an accident of nature).

I think the good news is that Historic Christian orthodoxy is stronger than both of them. Look at China, Africa, and the rest of the global south and you will see that there are many more new Christians added to the world each year than Muslims.