My brother was easier to raise than myself and my sister. My sister was a party girl and I was just plain moody. If my mother described me to anyone it was that I was "moody." I don't take that as a compliment. She and my brother were very close. My brother was the "golden child": smart, perfect friends, abides by rules (but if he broke them it wasn't a big deal.) I realize my parents were more restrictive of me, but that is probably b/c my behavior warranted such repercussions. I was probably most likely to spiral out of control.
Individualistically we are a product of our environment, being shaped by external influences ... as early as infancy. Where is the child placed within the social hierarchy of his/her peer and family group? Is the father involved in the parenting? Are the parents consistent in discipline and follow same rules? Is the child an only child or have siblings (and birth order)? Why can a child be more behaved at school and a tyrant at home? All of these things and more influence behavior.
With all my friends around me who have both girls and boys ... the consensus is that yes boys are easier to raise. The girls I have seen (very young) are very bull-headed and stubborn. Think of it this way (and this is a generalization, but true for the majority): When females are involved in a conflict they brood, plot ... they're like the nasty cat with a grudge. When boys see a conflict they duke it out and walk away.
My sons so far have been easy to raise. I really do believe that is because their father is heavily involved in parenting and discipline. They each come with their own set of problems, but they have learned from their mistakes (one quicker than the other.) My oldest is an ISxJ: rule abiding, learns quickly, clean, very responsible, articulates well, socially awkward but gets along with peers (just part of the growing up process), has been bullied in school, he's a follower b/c he wants to be accepted however a leader b/c he stands by his own rules, independent, goal oriented, impatient, perfectionist (which lends to frustration.) My youngest is an ENFP: makes friends easily, funny, clown, happy, affectionate, smart, a follower, MESSY, goes with the flow. I have stated more than once that I have better chemistry with my younger than my oldest, and my oldest has better chemistry with his father.
Obviously this type of conversation is my cup of tea. I love sociology.
http://www.cds.unc.edu/sdirp/social dynamics.pdf