It's easier to fix a really bad reputation when you're really good than to get really good when everyone is measuring you against a really good reputation, but

It's easier to fix a really bad reputation when you're really good than to get really good when everyone is measuring you against a really good reputation, but you're actually really bad. In the first case, people will be surprised if you do anything right - so if you do everything right, they'll be amazed. In the second, if you do anything wrong, they'll be dissapointed - even if it's something really minor (but being the world's worst says that it will be more than something really minor).