Frankly not everyone who says they're "religious" is in deed "religious."
As far as a "litmus" test on Christians, see if they believe Jesus is the Christ and if they profess it.
I don't believe the Westboro Baptists are Christians, frag they aren't even Baptists as they were kicked out of the Baptist church.
In fact several "Christian" groups are becoming more "friendly" towards homosexuals, whether its good or not I dunno, but for the most part I'm not interested in what others "do in their bedroom."