Maybe it comes from the general notion that Asari, especially Matriarches, are comfortable with their sexuality and enjoy the looks they receive?
<<<<<<<<<<(0)>>>>>>>>>>
Sure. The interesting thing about sartorial choices, is this.
Both the writers and the artists come together and provide input about how characters will look in the game and both will come to an agreement. Sometimes, the writers will adjust their character to fit the visual proposed by the artists.
So, I never delve into the why or comfortability or imagined sexualization "issues", that some in the BSN get all hyped about. I'm comfortable if the visual design fits the theme of the story. I'd find it irksome, if DA:I arnours are found in a Mass Effect game and vice versa. The latter makes absolutely no sense at all.
One "beauty" of a Mass Effect game is that I can play for an hour+ while watching an enjoyable looking female butt (my protag). I'd hardly call it enjoyable, watching a Turiuan's hard bony azz.