yeah that's kinda true, except for politics and stuff. But you could say that's down to the balance of power in our society.
Men have competitive conversation, whereas women have cooperative conversation. This could be the root of what Mark said, since most industrial or commercial jobs that require linguistic skills are likely to require mainly cooperative conversation, which doesn't come so naturally to men. In a field like politics, everyone's always arguing (same goes for lawyers/solicitors) so maybe men find it easier, whereas women would rather not argue.
Course the theory doesn't always hold. Women somehow manage to always win arguments
