I have to say I am with BB for this.
I have suffered from this as well yesterday in my cup game. I felt like I could have won this game but I suspect he played CT and I played normal.
However if you want this game to be a bit realistic and close to reality; then you cannot separate the enthousiasm in cup games and league games. As you see for instance in football. Teams like Manchester United will rest players before a crucial game or concentrate all superstar players on a game they NEED to win.
So hopefully after the all star break; after finetuning the match engine. BB will reflect more realistically. Because of course it was never meant to be a sure win button regardless of the quality of the team.
yesterday is history, tomorrow is a mystery, but today is a gift. That is why it is called the "present."