So where is the comparative information on bread-winning males?  Is there an assumption that the 'status leak' and the dissatisfaction don't occur, in relationships where the lower-earning, 'supportive' partner is female?
And where is the comparative information on couples where both are high-status and high-earning?  What are the dissatisfaction there?  Where's the comparative info on marital breakdown?

I know this research may be preliminary, but it's really useless, as is.