So you see no similarity in the underlying themes or principles?
I'm not looking at every aspect of the plot.
Every aspect of a comparison does not have to be the same for there to be parallels in the main underlying themes.
But coming down to your level of the very basic analysis of things, if, as you say, you read the books and watched the series or film, you'll recall that there was complicity by some women with the program. And some of the surrogates were 'happy' to be surrogates. Happy to comply.They felt altruistic about it. Some of the wives were also happy with it, because they benefitted by getting a baby and also negated being the direct targets of a tyrannical patriarchal system. That did not mean they were any less coerced into that stance. In fact the entire program was couched in altruistic themes. 'Giving a child a 'better' home, helping to save humanity from a world wide depopulation crisis, helping infertile women have kids'. Was the fact some were happy to comply and even felt positively about it, mean the practice of a woman's being stripped of her personhood, being demoted and deconstructed to that of a living womb and carrying and giving birth to a child for someone else and it being ripped away from it's mother any less barbaric and immoral?
Margaret Atwood was well aware that other women are capable of undermining their own sex. Of complying with narratives that help to restrict their worth as equal human beings and reduce them to merely being facilitators of breeding. That's why she put that in her book.
In my opinion women who agree to surrogacy and think it's great and cheerlead it at either end are totally undermining their sex as a whole, including themselves, and dehumanise the value of humans in general because the effect on the newborn baby human is dismissed for convenience. They are facilitating the corporatisation and commodification of pregnancy and birth. It's pure materialism.
And as a big aside (because I don't agree with this either for somewhat similar but different reasons), but there are plenty of women, often religious women, but also not, who put their own lives at risk to extend their families. Critically, they don't pass that danger over to another woman or pay another woman to risk her health for them. They risk themselves. If MT wanted a baby that badly she had the right to risk herself. She could have made that decision. She's trying to say she had no choice but to use another's woman's body to put a positive spin on it. I also wonder if it was about saving her figure, because if so, that is unbelievably immoral.