The only way to prove your the best is to show it not say it. In this day of fast media and internet sensationalism, ANYONE can say they’re the best. And they do. In my niche business market, we’ve had 3 of our local competitors copy or tag line almost verbatim since we introduced it. So there are now 4 businesses claiming to be the best. Unfortunately for them, the only way to prove that you’re the best is by the results you provide. Talk is only good if you can back it up.