Required added cash has never been that high. This year it's $4000, and it's been $4000 since at least 2011. By my quick and dirty math, the 2012 BHMO had at least $5000 added (Open entry was $135, everyone else was $110 per
this page). And also by that q&d math, it looks like cash was added to Open and Women at pretty close to the same per-player rate. In fact, it looks like the Women got slightly more per player than the men. With 7X more players in Open, and the men paying $25 more in entry, of course the payout totals are going to appear pretty disparate.
Not sure there's anything to be critical about with the 2012 BHMO payouts, unless we think they should put a disproportionate amount of added cash in the women's division (I personally wouldn't object, but have no issue with a straight down the line proportionate share).