So of course women and people who claim to be more sensitive to women's issues will take offense to anything that may be 'harmful' to their self-image despite the fact that we tend to have sexy male characters too. This, of course, is explained away as 'male-power fantasy' (as laughable as that is.)
There really is a difference though, because of the wider context.
There is a male character in the manga Fairy Tail whose schtick is that he gets naked all the time, and has a stalker female character constantly ogling him and saying how hot he is. At the same time he is a cool, powerful character and popular with both male and female fans.
Yes, it would be very silly to ignore the sexualization because he can be seen as a fantasy for men as well. The point is, it can be
both. Even a male character sexualized for women can usually be considered a male fantasy as well. I would guess hardly any men are made uncomfortable by the Fairy Tail dynamic I mentioned.
So why is it different for women? I won't pretend I can come close to saying everything that could be said, but a couple things off the bat: women are far more likely to be sexually harassed, with emphasis given on how what they look like or what they are wearing is responsible. Female characters in games and media are much more likely to be used as merely sex appeal. They don't get to have the assumption of absolute safety, respect, and power (like the Fairy Tail guy) while being used for sex appeal.
It is crazy that you tried to chalk it up to jealousy, because (as mentioned in a great article posted earlier) women who fit societal standards for auto-sexiness have to deal with a lot of crap because of it.
But this is all why the targeting of Dragon's Crown is so problematic and why it makes me so uncomfortable. Why it seems so disturbingly similar to telling women what to wear to avoid harassment.
Because the women are not being used merely for sex appeal; they appear so far to be powerful and in control. And they are not all being given a "standardized" sexy representation: on the contrary, the game is an outlier in terms of design, and has a wide variety of character designs.
Really you just need to look at more of Kamitani's artwork to see that the initial (understandable!) assumptions about the sorceress were wrong. Look at all the other Vanillaware female characters, not even just from this game.
Then there is:
Which gives some context on the large breasts in particular, if that was your hang up. Notice that the other characters are not dressed or posed as "sexy" as the sorceress is. So large breasts is not just a code word (in Kamitani world) for sexy. That interpretation is up to the audience.
So many people are just seeing one image and making bad assumptions.
A mistake was made, time to move on. Not double down on trying to pretend this outlier artist typifies the industry and link him to sexual harassment, discrimination, and so on.