I'm going to make broad statement about high-testosterone males here:
If this game DIDN'T have half-naked women elves with miniskirts revealing their undergarments, would you have even taken a second glance at this game? I don't know about you, but if I were to see two headlines, one about a nuclear threat from North Korea, and another with a phrase that has any one of these two words or its synonyms: women and naked, my first instinct is to click on the latter.
Luckily, before I click on it, I remind myself of why I'm clicking on it and I go sit in the corner and condemn myself for being such a primitive ape. I can just GOOGLE the phrase "naked women" if that's what I want to see!
I'm going to admit that the only reason I'm posting here is because of the headline. I know, it's sad, it's pathetic, but dammit, it's how I am, and companies are well-aware of this as well. Give one example of any kind of advertisement that has an average-looking female. And I really do mean average. Post one advertisement featuring a female that has no makeup, has zits, moles, a little weight, anything that would deteriorate the Hollywood-standard of a perfect-looking woman.
They exist, but they're extremely rare.
Games are not the only forms of entertainment that does this. Sexualizing females is pretty much everywhere, and it's a good marketing decision (as much as I'd hate to say it). It's a good way to get (heterosexual) male's attention to make us pay long enough attention to what they're advertising.
However, I'm not totally against this. We're sexual creatures, and it's the way we're wired. The only thing I ask is... you know what, I'll just point to Move Bob:
http://www.escapistmagazine.com/videos/view/the-big-picture/4719-Gender-Games