Doesn't this ad just say it all?
I know it's not that different from the other training ads, but most of them say "get the body you want...". This one comes right out and says it: "get THIS body".
It also appeals to a very specific audience. If you've seen 300, you'll get it right away. If not, well, you won't be tempted to click on the ad (and the advertiser won't pay a dime).
Clarity and simplicity are good. Especially in crowded advertising spaces like FaceBook.
Your turn: Any examples of "clarity" ads?