Yes it's true. Aren't you glad you read this blog to find out all the good publishing news?
Ben Leroy hates superman. (Small s.)
He says it more cogently over on his blog post at Dead Guy: "If your protagonist is conveniently shiny and skilled" he's boring.
There's some other good stuff here too. Take a look. Then scuff up your hero, and put him in some genuine hot water, and accessorize him with a sidekick who isn't called "honey."