I didn't watch any of those movies, so I'm not sure. I like some horror movies, but they aren't really scary per se, but are more creepy and sad.
And as far as I know the people who freak out at porn but not violent games,etc are soccer moms. They buy their kids the latest call of duty installment or something like that, but will freak out at porn. Probably because they don't anything about the games, and most soccer moms are hardcore christians so they will get upset at anything as sinful as porn.