[Ethereal]

There might only be one way to do it! One of us guys, or someone we know, should at least get a pair of fake tits, put them on, go out into a very public place and conduct an interview asking specifically women how they feel about a guy having big tits. And NOT just younger, artsy kinda of women that are prone to SAY, "It's perfectly fine with me! I much PREFER to bend gender rolls!!", but, just your ordinary housewife types, especially if they have kids and/or a boyfriend/husband with them.
I suppose it COULD be done without the fake tits, but, it might be a more honest-ish way to go about it.

whats a CIS female?

Cis is just a fancy term for if you identify with the gender you were born with. I had to look it up at one time as well.

Cis Gendered Definition

If I were to throw my opinion about the topic is that there is no real definitive answer. You could sample a group of women and see what they think and then sample another group and get completely different results. It is of my opinion that it just depends on where they fall on the religious and political alignment and even then you just don't know but it would help to break down the answers into groups based on their own beliefs.

I've also run into a group of women who call themselves TERFS (Trans exclusionary Radical Feminists). They are some seriously hateful women who should be avoided at all costs.

The Terfs