How about this one
https://media.pocketgamer.com/images/featimgs/kate-upton-crash.jpg
Yes you are right in the sense that there weren't a lot of hot dudes in video game ads. Because video games were very much thought of as a boy's toy during the 1990's in which these types of ads were commonplace. By the time gaming got into the female market (2000's), the "sexy" ad was already mostly gone.
But advertising is all about target audience. Clearly women respond to the sexy shirtless/naked man just as much as men react to the mostly naked girl. Because both types of sex in advertising are still present.
My point is that using sex to sell a product is not sexism. Whether you are catering to a horny teenage boy market or not. You think K-pop groups and boybands didn't cater to a horny teenage girl market? It's all about where the demographic for the marketing lies.
Just because it's different doesn't mean it's unequal. And if sex appeal is used to market to both men and women, then how can sexy marketing be sexist?