Negotiating Book Titles With My Publisher

In case you don't already know, authors/editors don't get to unilaterally choose the titles to their books. They are negotiated with their publishers. So which title for my forthcoming anthology do you think is better of the following two:

Christianity in the Light of Science: Critically Examining the World’s Largest Religion

VS

Christianity Under the Microscope: Scientifically Testing the World’s Largest Religion