Given that Christianity was the social norm in Europe and many European colonies for centuries, this statement is nearly equivalent to saying that many great scientific discoveries were made by Europeans. It's true, but only slightly interesting.
If this is not intuitive, consider the hypothetical world where no serious scientific contributions were made by christian europeans at all: would we then be free to dismiss that fact as uninteresting as well?
My point is that for most of recorded European history, professing Christian beliefs was the default. Straying too far from Christian ways would have required considerable intellectual effort and have been socially and economically costly. So there should be little wonder that many great European scientists were Christians.
But I don't think the historical facts can be used to draw strong conclusions about scientific or anti-scientific thinking in the population of Christians living in modern secular democracies, as the context is very different.