American non-Christian Christians

This article says almost nothing I didn't already know about the way the very Christian US nation acts completely unchristian-like. But this made me laugh and I must share:
"Twelve percent [of American Christians] believe Joan of Arc was Noah’s wife."
LOL!! That's hilarious! It's one thing to think the bible preaches: "god helps those who help themselves" (which it doesn't) that just poor reading skills. But Joan of Arc, ahhh that's soo funny!