"I have never found in any measure where secular people give more than religious people," Brooks noted.Even secular charities benefit more from donors who have a religious faith than they do from secular donors. Religious people are 10 percent more likely to give to secular causes than secular people, he said.
The study states that the last line (in red) is due to church's practice/encouragement of tithing.
Well that just proves my point doesn't it? And besides, even if there was parity in secular donations, religious charities feed clothe heal and shelter a lot of people!