You are basing your information on estimates provided to you by the very ones who promote naturalism. Henry Morris has some publications that begin with the presupposition that is Biblical and the evidence matches up as well with his claims as it does naruralistic claims. Don't be fooled. All theory begins with presuppositions, no matter who the source is.
You know all those biologists that say you need oxygen to live? Keep in mind, they're all oxygen breathers... obviously an agenda at work...
Just because a person believes something, and finds evidence to support it, doesn't mean they are bending and twisting the evidence. It's possible, but it's not a foregone conclusion.
Dave