When I was going around asking feedback for PureMetrics, one of the way I would position my product is by saying that all other products are incomplete/imperfect. With one of the folks I had an interesting conversation.
He: Are you married
He: Is your wife perfect? or are you perfect?
He: Products are the same, they will never be a perfect product or a spouse. More importantly people will use the most popular good enough product because it is good enough.
That conversations changed the course of my startup, we decided to pivot to do something more than just a pure analytics product.