So you found one outlier, which has a perfectly logical explanation (they aren't allowed to show topless women in the game unless they're very heavily stylized ala Therazane). We both know that there are far, far, FAR more examples like mine than what you have provided (Inquisitor Whitemane, multiple plate and mail sets, plus a lot more leather and cloth sets).
The best part is not only is your dis ingenious example an outlier, but it's not even an example of consistency. Consistency would be something like the Dark Iron
Plate which looks pretty much the same no matter who you put it on.
For example, you want to bet that all but maybe one of these sets isn't anywhere near as revealing on male characters?
or
or
there are plenty of examples of what I'm talking about.
Here, here's another one that shows the difference.
Stop trying to make some point about how they are consistent because they made one or two sets where the roles are reversed so it's totally even.