There’s no set rule, no specific level of fantasy failure that must be attained in order to call a player a bust. A bust is a bust is a bust. You know it when you see it.
For the most part, it’s about expectations. More to the point, it’s about failing to live up to lofty expectations. Or maybe the expectations are average but the player is just so ridiculously bad that he’s got to be considered a bust.
