No, it all comes back to mistaking the map for the territory, or the rulebook for the game. The WBC guy is on the edge of the spectrum, but the motivating principle -- that one must take every word in the Book of Old Sumerian Myths and Jewish Folktales literally -- is the same. Some might even say the WBC guy is being more honest, since when you read the hardcore stuff them's smiting words.
Once people wrap their minds around the (obvious) proposition that the Bible is mythic and symbolic, most of the hatred and idiocy drain out of them. Seems to me the essence of Christ's teaching is that you can slavishly obey every rule in scripture and still be no closer to salvation, but if you believe in Him, the symbol of love and forgiveness, and apply that in your own life, you have taken the first necessary step to redemption. It's just not that difficult a concept.