Excellent point.
If you gave Jerry two options, one where he is the GM and makes all the decisions and the team wins jack, or option two where he hires a GM who makes all the decisions, and the Cowboys win the SB...............which option do you think Jerry would take?
I think we all know the answer to this...................Jerry would rather be in charge and lose, than win a SB if somebody else gets the credit (see Jimmy Johnson).