I respectfully disagree with the underlying premise of this question. As much as I personally would like to see more huge-boobed women in starring roles (and would find many A-list actresses hotter if they had much bigger breasts), the entertainment industry and mainstream society do not think the same way we boobhounds do. With rare exceptions like Christina Hendricks, actresses with huge boobs are not taken seriously by movie directors. They tend to get typecast into sex-based bit parts where huge tits are the defining feature of the character ("bimbo girlfriend", "trophy wife", "stripper", etc). If the character doesn't specifically call for huge tits, they're not going to cast an actress with huge tits, because then her huge tits would become a distraction from the rest of the scene.
And even for roles where the character is supposed to have huge tits, Hollywood is more likely to cast a small-boobed actress and use theater tricks to make her boobs look big. In the John Watters movie "A Dirty Shame", he cast Selma Blair (who is literally an A-cup) to play a stripper named "Ursula Udders" by having her wear huge prosthetic breasts. Same thing in that recent Hulu series "Pam and Tommy" - Pam Anderson was played by some flat-chested English actress who wore a fake breastplate.
Hollywood's idea of ideal female beauty is slim or athletic with average-sized tits. Those are the girls who get cast in the widest variety of roles. And that's why when people make those "actresses with huge boobs" lists you see women like Scarlett Johannson and Halle Berry on them. To us, those women have small-to-medium breasts, but in A-list Hollywood they're considered "big".
If Gal Gadot had J-cup breasts, she wouldn't be famous at all. Warner Brothers would never in a million years cast a woman with tits that huge as Wonder Woman. Her acting career would consist of a few background roles like "Voluptuous Woman in Elevator", or "Brunette Call Girl" and maybe a few softcore skin flicks or something. Practically no one would even know her name.
