It's not enough to be credible, you have to be committed.
I am having various debates at work around one of our clients who do have a lot of credibility as a 'creative' brand. However, it dawned on me that credibility is not enough because lots of other competitors direct/indirect can also be credible in their own way while claiming the same territory. And here is where my thoughts shifted towards commitment. How committed are you as a brand really to whatever territory you want to own? Take Dove Real beauty for example, fantastic campaign and reasonably credible (unless as a consumer you find out that it is made by the same people who glamourise skinny girls in their Lynx ads). Now take Nike for example that is committed to its cause and never wavered from its few core principles such as being for the athlete in all of us. Nike is committed and credible when they give me something like Nike+. Since day one they've been about the athlete and did things for the athlete it's an unwavering commitment and loyalty to an attitude as much as to an audience. The difference is that between those who will use whatever cool thing they can find in order to brand and sell and those who truly believe in a cause or a mission. I can't remember who said it but somebody once said that a principal is not a principal unless it costs you money. Now that's commitment.