That gas station is too expensive. That juice company exploits migrant workers. That bank's interest rates are too high. And so on. In fact, products and services are so complex that hardly anyone has the time or the resources to fully analyze a product decision.
Most companies know that.
Most companies also know that, due to limits of technology and competitive pricing, their product is in just about the same league as everyone else's. If they can generate warm fuzzies and a sense of good will towards their company, they don't have to have a better product. They just need to have the better ad agency. After you've been subjected to tens of thousands of hours of television advertising, you think you have a clear picture of which products are the best. To some extent, just about every decision you make is some mixture of fact and hype, depending on how much effort you care to put into the quality of that decision and how much you elect to be influenced.