Why?

I've been watching the Spanx  ads on my computer.  I'm not sure how these wonderful body shaping underwears are a help to the 'average' person.  So far, every model appears to be a 'perfect 10'.  It would seem, they are definitely not in need of this product.  So why not use some of us 'averagers' to promote Spanx?  Would that make a fantastic selling point?  "Hey you 'averagers', want to look like a 'perfect 10'  Here's your chance..............marge