I'm afraid you're mixing apples and oranges. Even if only one-third of the population accepts the validity of evolution (and science is NOT a matter of popularity), fully 80 percent of the U.S. population professes to be Christian. Therefore, it is quite conceivable for the majority of evolutionists to also be Christian.
The word Christian does not apear at all on the page you cited.
You have not successfully contraverted the statement that most of those who accept the validity of the scientific theory of evolution are church going Christians.
I would say that it is probably correct for the United States and Europe, but China and India proably have more non-Christians who accept the theory than Christians, simply because they have more non-Christians in their population. Same for Israel.