To me, "perfect" fake tits have some natural sag, and you really can't tell if they're real or not. If I can tell at a glance, they're not "perfect", IMO.
In the ones you have above under "Perfect Fake Tits", I can't tell with girl #1 (very nice!). Unless I saw the doctor's bill, I wouldn't know for sure. I would have said natural, actually. But with girl #2, it's too apparent (to my eyes). They're not ugly and at least she doesn't have scars, but it is too apparent for my tastes.
I take natural tits that don't sag.