CAN PEANUT BUTTER REALLY HALVE YOUR RISK OF A HEART ATTACK?

I've just been reading yet another health article in a magazine that says that US researchers have discovered that eating peanut butter 5 times a week could halve your risk of a heart attack. As much as I like peanut butter I feel that articles like this mislead everyone into thinking they can snack on peanut butter all day and still be "healthy" (whatever that is).
My point is that there is peanut butter and peanut butter. I, for example, buy a (rather expensive) natural peanut butter that contains only - yes, guess what? Peanuts! However, a quick look at the labels on peanut butter on the shelves of your local supermarket will soon show you that pure peanut butter is a rarity. Many have added sugar and salt (probably not good for your blood pressure) and some have salt, sugar and palm oil (I'm sure I've read somewhere that this is one of the worst oils to eat if you are concerned about coronary health!).
So I suppose we have to use our common sense - as my grandparents used to say - "everything in moderation" - of course scientists can't measure that...