Having been with a female lawyer in an LTR for 2.5 years I can tell you that even "logical" women are experts at distorting reality to fit into their own version of facts to benefit themselves. I do think it is biological. However, my ex was great at sounding like what she was saying was absolutely correct from a logical standpoint until you realized the more you spoke to her about why she felt the way she did. We basically just spoke in circles with her never admitting to ever being wrong. There was always some angle I wasn't seeing in her mind (or so she would tell me) when in reality it was just the same ole' tired sh1t that every woman pulls. You know the one - she is emotional and feeling bad so you are in the wrong.
At the end of the day, a woman will argue with a man the same way whether she has a high IQ or a low one. IQ isn't nearly as important for an LTR to last IMO as it is for the woman to be able to own her mistakes and acknowledge when she is wrong and being emotional. Doesn't mean it is easy to deal with the swings she experiences, but it is impossible to be with a woman who never admits fault and wants to explain to you why you are wrong every step of the way when, in reality, her emotions have gotten the better of her.