Anheuser-Busch is known as a great advertiser and a good ad can resonate with its consumers for a while.
There's a saying that 'networks sell the Super Bowl two or three times,' because a company will decide its message is not good enough and pull out.
There's such a great demand for sports. And the opportunity with the Super Bowl is one in which you're reaching an incredible audience that is actually engaged in the advertising.
Companies certainly back out of advertising when they feel their message won't resonate with customers or the media.