It's easy to confuse them for the norm though since they are so... vocal. Usually a lot of stereotypes about Christians are based off of these groups. Anyway, I do feel for your jihad though. I hope that one day you will be able to marry the woman of your dreams in a traditional Islam manner. Allah be with you.
Yeah I wouldn't take Jack Chick or WBC too seriously. They grossly misrepresent Christianity almost to the point where I don't consider either group to be Christian and that's saying something coming from a professed heretic.