“Has there EVER been a religious superhero, much less one with a Christian world-view?”
Well, this doesn’t exactly fit your worldview, but how about The Hebrew Hammer: http://efilmcritic.com/review.php?movie=6925
Benn Grimm (the Thing) actually went through a bar-mitvah, cause he’d missed his as a child.
The current “Who wants to Be A Superhero” features “Mr. Mitvah”!