Just to play the devil's advocate, do you think the sales would improve if the ratio was better? Like if fem Shep has gotten more LIs or would it still roughly be the same? We can also go the opposite direction, if straight Shep has gotten fewer options like only 2 while fem Shep has 7, do you think it would drive away sales?
Nope. Or I should say, no guarantee whatsoever. This is more in an exercise of showing how percentages can be viewed (or not viewed, depending on the case). The point is more, that a business will not discount percentages simply because one is major and one is minor. I am a female, with the bad luck of having all my female Shepards without an LI through the third game (Thanemancer...woops), yet I still don't believe BW/EA "chose" to diminish the sales (potential sales) of females (or males who prefer to play straight females...??*shrug*). Again, resources and time management (and some overlooked material), were more than likely the culprits to the "imbalance". Still don't have to like it, but I do not see purposeful intent.
As for how this applies to the gender ratio at hand (and more importantly, the speculation of the OP), it probably doesn't. LOL!
So to get back on topic, my "wish list" as it were, would be: the Dorian/Mustachioed Man as a Mage, and a female dual-wielding dwarf. That would be the bees-knees....or jar 'o bees.