While you do have a point, Harley's character and interpretation in SS was meant to scream sex and promiscuity. That was inherent to her character in the movie. The same doesn't necessarily apply to Wonder Woman's character.
And if you're concerned with her being sexy, isn't that just a matter of taste? That's totally subjective right? There are a lot of people out there who view Gal Gadot's WW as sexy without the cleavage.
Correct me if I'm wrong but I don't think guyver1 was saying Gadot's WW isn't sexy, more that she isn't an accurate representation of the comic book character. I would disagree but life would be boring if we all saw things the same way.
I hadn't really thought about it but you are right about the ambiguity of her accent. It definitely adds to the mystique and exotic nature of her character.