Maybe you are poor fit for the team, and your dud team would be full of Rockstars with a different manager? It would worry me if one of my managers thinks that

Maybe you are poor fit for the team, and your dud team would be full of Rockstars with a different manager? It would worry me if one of my managers thinks that since they have led many teams, some successfully, that any negative outcome must mean that the team was bad. Such opinions are probably the reason many good people leave.