In my perception, and I take full responsibility for the fact that it is my perception, it truly has not. I can't open a single RPG book or comic, or play almost any video game, without seeing a large number of sexualized female figures while the male characters are primarily presented as normal characters - eg, as the real people who are not sexualized.
I think you have some fair arguments.
However, on the male side, consider this:
while almost every woman picture in a game looks good, where you consider the males as "normal characters" how many of the men in the games have bellies that extend past their belt line, or love handles.
The majority of those men will be in ripped shape. Which is also not realistic.
What you might be calling sexualization of the women in the pictures and "realistic" for the guys might simply be the artist portraying the prettiest people possible.
Or even sexualization of the men by making them look in good shape. I think we all know what sexy outfits on a woman looks like, and could point to it and determine that outfit wasn't chosen for practicality. I'm betting it's not so simple with guys in art because the standard is different, and there's not really a fashion industry around sexifying guys. But I imagine gay guys probably appreciate looking at the men of gaming art.
And really, my core observation was that in RPGs, say from WotC, they have toned it down. Compared to what women are bombarded with on TV, magazines and fashion, and how much exposure that is influencing young women today, that's your bigger fish to fry. Fix that, and gaming art will probably come into line as it feeds off of what the societal expectations are.
Whereas, if you attack gaming art as your keystone of women's denigration, you're only affecting a niche hobby, and thus a minority of society that should change and improve how it represents and views women.