Obviously our sense of fairness would tell us otherwise. However, our belief in our professional abilities is often communicated in how we package ourselves. Our constituents have a predisposition to believe that we are as good as we look. You already have a brand. Your brand is your reputation.
Large companies spend billions on building their brand.
These branding messages effectively sculpt a company's reputation, and enhance its familiarity among its customers. It's common knowledge that we buy from familiar establishments. Familiarity breeds the perception of quality. When traveling, I enjoy finding new and different places to eat. However, when traveling with my teens, we find ourselves settling for McDonald's or Burger King, rather than enjoying a locally owned restaurant, which is likely to be of better quality.