I do not purport to know Obama's view in respect of Christianity or anything else for that matter, other than what I have seen on TV news and current affairs reports. And this is a notoriously distorted view at best!
My only comment re this clip is, look to the source. It is very easy edit to get a point of view across - that may or may not represent the person's understanding or position in question.
Who posted the clip? For what purpose?
Time will give us a better picture than a heavily edited video clip posted by some 'dodgy' group claiming to represent reality for the rest of us...
Tony Robinson