Are men who grew up with (younger) sisters kinder to the women they date/do men who have only brothers behave like dicks?

Well, I closely know one guy who has a younger sister.
He jokingly celebrates every month that he hasn't cheated on his current partner saying it's "tough work" and routinely uses people, including his relatives, as alibi for his cheating without their consent or knowledge.
He IS protective of his sister, though.
In the creepy, over-the-top inappropriately incestuous and abusive way (like taking issue with whoever she spends time with, the way she dresses etc).
Even though all of my siblings are sisters younger than me, I would not know about the 'kinder' part, all I know is I can see though the BS, treat them as equals, but do not cut them any slack if they screw up, but at the asme time anyone messing with them are also messing with me and the end would not be pretty.
Nah.
My best friend has no sisters and he's a total sweetheart.
My other best friend has 4 brothers and he always spoils his girlfriends.
some of the greatest, sweetest and most caring guys I know grew up with brothers only, so...
Opinion
3Opinion
For me: no. My sister is 11 years younger than me, so she didn't change anything about me. Too much age gap.
What about guys with older sisters? How do they treat women?
I don’t think I’m a dik
Superb Opinion