The squib at the first link is not very clear. It seems to assume that team work should be preferred, and the reason for rejecting it is a false belief that you're better than the people you'd be teamed with. There's no consideration of whether the perception might be true or whether there's an increased motivation to do better work when you're going solo. There's also this:
[Women] were... much more sensitive to increasing their potential partner's incomes, reinforcing a well-established idea that women demonstrate more "inequity aversion" than men. That is, they're less comfortable with their colleagues making dramatically different salaries.No mention of the incentive to work harder and do better because you want to make more money.