WTF? There is no way that is Leonard Nimoy's body.
Here's the thing with the majority of women, in my experience. There is no universal attractiveness with guys faces, though this is largely true with men. This means I can show a picture of an extremely attractive girl (in my opinion) to ten guys and I'm sure nine or ten of those guys will agree that she is extremely attractive.
On the other hand if I found a picture of an extremely attractive man (again, in my opinion) and showed it to ten femals, there would be much more mixed opinions as to the man's attractiveness. This would probably be the main reason they would market body parts, and not faces, towards women.
Abs are universally accepted by today's society. In fact you can be extremely soft all over but have solid abs and the average Joe will think you are fit. If you had a pot belly but had leaner limbs people wouldn't consider you as fit as the first guy. Further, if you are fit most people will ask to see either your biceps or your abs, abs being more sexual in nature due to their position and ability to bring just enough crotch/hips into the shot to be suggestive.
Women want to be young, young is associated with fitness and sex, women associate the advertised product with these things, the item is purchased because of the emotional connection.