This confuses causes and effects. There is nothing exceptional about women and having them involved will not make any difference in itself. Having a company culture that is capable of welcoming and involving different genders, races, ages, and so on, however, will. E pluribus unum. Such a culture can manage the inevitable stresses that comes with differences and harness the full potential of its members.
A company with both men and women have a higher chance of success simply because it has a better culture. The presence of women is an indicator of this, not a cause.