Season 9's Golden Buzzer format was a complete waste. It made a joke out of the Golden Buzzer. What a horrible way to introduce it to AGT. Holy hell. Not only was it a literal waste since neither of the two acts it was used on made it past the Vegas Round, but we didn't even see the other two judges' decisions, for two acts which obviously didn't make it past the Vegas Round, either.
This is one thing BGT did correctly, right off the bat. They've been using the current GB format for three seasons now.