Undefeated records importance is rooted in the monetary worthyness of a fighter in the eyes of promoters, and casual fans. The myth that an undefeated record = an amazing fighter is perpetuated constantly.
An undefeated fighter today is a cash cow, and it appears that most promoters will do what it takes to protect that 0. It sucks.
Its ignornace that makes people believe a mediocre undefeated boxer, is better than a highly skilled boxer who had a bad night. Ridiculous!