The question then becomes does Christ's life and death and resurrection have a positive effect on the creation?
Well, since Adams life had a negative effect on creation, it makes perfect sense to believe Christ's life had and has a positive effect on creation.
However, I don't believe Christianity as a whole is growing as fast as Islam.
Islam is a blip. It was contained before and it will be contained again. What is this war if not a clash of theology (though many hesitate to label it as such?)
Overall, do you think Islam will prevail or Christianity?
I believe Islam is the product of Satan. I've read the Book, in the end we win.