[xorcist]

The rock star dev is the one who thinks he's the best dev you have. Sometimes they overlap, but mostly they don't.

[hodwik]

So your definition of the "rock star dev" is the guy who isn't the rock star dev, but thinks he is? I don't think that's how language works.

[gnaritas]

> The rock star dev is the one who thinks he's the best dev you have.

No, that isn't what it means. Your actual best dev is your rock star, that's the intended meaning of the phrase.