The legal issues are like apples and oranges.  

The FTC Order was based on:

 "The agency alleged Boone and Karr Preventative Medical Products Inc., which made the product, falsely claimed it could cure acne and was effective in anti-bacterial treatment of the condition."

There are statutes that prohibit that.

Every gold and silver selling ad I have ever perused--including those on line, always say that there are no guaranteed results and that prior performance doesn't predict future performance.

That language is put in by attorneys to protect their gold/silver/memorabilia-selling clients.  Stock brokers and such also use that language for the same reasons.


In the law ads like that are often called "puffery".

"Puffery refers to an exaggeration or statement that no reasonable person would take as factual. It often occurs in the context of advertising and promotional testimonials."