It's a lot harder to believe that a company with a Superbowl ad is an out-and -out scam. At least in my mind, I tend to assume that if they make it to that level, they're legit.
Like if you're as rich as Bernie Madoff you must be legit?
You do realize that the "con" in "con man" comes from the word confidence, right? The most important thing for any scam to work is building confidence.
What better way than with celebrity-ish pitch men and a Superbowl ad?