Lack of money is a much more severe situation than lack of sex. Lack of money comes with the possibility of poverty, while lack of sex just means that you will have to wait longer for sex.
I'd be very surprised if it were close. I bet almost all guys would choose the former over the latter.
Seems to me he's saying that the women aren't doing it to survive, they're doing it to get a college education. I would submit that the drive for sex is a much more primal urge, going back a half billion years or so, than the drive for a college education.