From my experience, I'd have to say there are always factors depending on that individual. Especially how they grew up and even more so, different cultures.
However (puts metal armor on), I do feel men tend to act more 'rational' depending on environment. You'll find men will probably become irrational in a home-setting, rather then out-in-public. Unless harshly provoked to the point of snapping from severe emotional distress. Probably for fear of the inevitable public stigma that surrounds their emotions. That doesn't exactly make them better, just more aware of their surroundings when an argument ensues; because of how they'll be treated. Some women keep quiet as well out of sheer embarrassment of causing a scene, but, I've found a lot will argue and act overly-emotional.
My Mother was a prime example of throwing a world-class hissy fit in public and provoking my Father at the top of her voice. She was asking for him to just try and get a word in edge-wise. My Father was subdued and kept his cool because of his embarrassment and being aware of his environment. She assumed she won the fight by provoking him in a place where he couldn't really argue back the way he wanted to; but I'd say my Father was the real winner by not making a complete shit out of himself.
I'd have to agree - that men (not all, but a majority) seem to be the most rational in that regard.
(Dodges anger-spear thrusts) BUT, women are EXPECTED to act emotional and a lot of us are raised with the belief that our emotions (some over-emotional reactions,..yeesh) are always okay; because of our gender. I get the feeling from most women I know, that men are just supposed to cower away from us until we settle down because that's just the way women are, and that's a load of horse-shit. I learned to keep my cool in arguments and tense moments, and to think before I speak or act.
It really comes down to the individual, man and woman, to learn and make the distinction, and to learn to control their own emotions. To decipher between the best way and the bullshit; and be aware of how it's making the OTHER person feel. Some learn, some don't. And some learn when it's far too late.
That's my two cents, at least. Well , more like five dollars, but, *raspberry*