When you add bacon to anything, it just gets better. Cheeseburger < Bacon Cheeseburger. Baked Potato < Baked Potato with Bacon. Turkey Sandwich < Turkey Club Sandwich. It's just a fact of culinary life.
Now I love CoC, but Cthulhu does not equate to bacon. RPGs are not automatically better because they have the Mythos in them. I just wanted to point this out, because it seems a lot of people think the way to make their games way more awesomer is to stick Nyarlathotep in there somewhere. Just like painting racing stripes on your car does not make it any faster. Just sayin'!