Sounds like a bad deal. My advice: try to renegotiate or hook up with one of the other type who must be doing pretty well.
(a) Is this meant to be evidence of the inefficiency of women? Working 2/3 of the time while accumulating just 10% of the income would imply that. There are other explanations, I suppose (sexism, history, division of labor) but the simplest one is inefficiency. I don’t think someone should produce a chart implying the ineffeciency of women without arguing for it outright. The suggestion is cowardly and a bit offensive.
(b) If you have 10% of the world’s income and just 1% of the property, this suggests there is something wrong with your investment strategy. You might want to find a new investment adviser.