You are very correct, there is a lot of cross-over. However, the posts I was referring to, the posters say that (paraphrasing) it was only the Christian Bible and Christian philosophy that was used and that the founders did what they did "because" of Christianity. Which, is of course, absurd.
"In the beginning of a change the patriot is a scarce man, and brave, and hated and scorned. When his cause succeeds, the timid join him, for then it costs nothing to be a patriot."--Mark Twain