I found that almost all robot girls designed in Japan are just ordinary girls with mechanical essential factor. Is there any practical difference between such robot girls and ordinary girls?

Well, they're generally more submissive.

This sounds like the similar thing of adding animal ears and a tail but no fur or other animal features. But tastes can change.

... You mean the same thing westerners do with androids/gynoids/synths?

weibilin said:
Is there any practical difference between such robot girls and ordinary girls?

Upgrades, people, UPGRADES

votp said:
... You mean the same thing westerners do with androids/gynoids/synths?

Well, androids/gynoids are meant to look no different than a real human, that's literally the whole point.

azero said:
Well, androids/gynoids are meant to look no different than a real human, that's literally the whole point.

I feel like this is starting to become a more terminology-based question than anything. I dunno how many people outside of Western cultures distinguish between robot and android, or gynoid, for that matter.
(Edit to change some pretty poor phrasing)

weibilin said:
Is there any practical difference between such robot girls and ordinary girls?

Robot girls don't have minds of their own, and if they do, you can always reprogram them easily without any pesky ethics ruining your ego trip.

Ain't nothing wrong with that.

There's still a certain appeal to indistinguishably human robot girls. Being a robot is not a hard binary of "you look like this or you aren't one."
Besides, it's not like people don't do this with other things too. How many anthros have you seen over the years with little or no fur texture?
Or aliens which are little more than humans with blue/green/whatever skin?

weibilin said:
Is there any practical difference between such robot girls and ordinary girls?

That depends on the story. There can be big differences. Not to mention being physically similar doesn't guarantee the same mentally.

weibilin said:
I found that almost all robot girls designed in Japan are just ordinary girls with mechanical essential factor. Is there any practical difference between such robot girls and ordinary girls?

...Well, one of them is a person...

lonelylupine said:
...Well, one of them is a person...

At least one of them is a person, anyway. Which one? Well, where precisely a facsimile ends and a person begins has been something of a popular topic of sci-fi for the past, uh, however long it was since "sci-fi" was invented.

I guess you could say something about how some popular media cares more for the aesthetics of a robot person than for whatever you'd term the "truth" of a robot person but you could also say that's mostly a matter of personal taste. What difference does it ultimately make if a comic about a woman being strong enough to devastate a car or single-handedly shake a house assigns this power to her being some kind of machine instead of something so packed with meaty muscle she'd make the Hulk look like a boy scout?

colacolabug said:
...What difference does it ultimately make if a comic about a woman being strong enough to devastate a car or single-handedly shake a house assigns this power to her being some kind of machine instead of something so packed with meaty muscle she'd make the Hulk look like a boy scout?

Why, the difference comes in how one destroys the woman, villain or villain-fighter, of course!
...I'll see myself off. But still, I feel like you can write some keen differences & have a better justification for them being "android flaws" instead of conscious/biological ones, or vice versa.