What makes women mere objects of desire in a game is not a cover showing clevage:

I once bought a book (on sale) called Chicks in Chainmail, with the cover art that you'd expect given the name. It was actually a pretty good collection of short stories about strong female warriors, but if that cover art had been on a book with a serious name, I wouldn't have picked it up to look at the description on the back. Similarly, if I'm standing in front of a whole isle of books, and the cover art on one has a guy with his shirt off and hair blowing in the wind, I'm not checking the description to make sure it is a romance novel, I'm going to assume it is (since that is what the publisher chose to present it as) and keep browsing.