Thinking aloud

"We're so sure that you'll like our product that we're offering a money-back guarantee if you're not completely satisfied."

Does that statement in fact imply that the company is not certain that you'll like the product? If I was positive you'd like my product, I wouldn't offer you shit, 'cause I'd know you'd like it, no questions asked. And if you didn't like it, you must be a homosexual.