They are not more sociable. They do need to be tamed, which they will resist. I'd say through experience that male and female juvenile iguanas are about equally hard to tame. Taming adult igs is a whole n'other topic.
Luckily they don't go through the breeding season manic behavior like males do. They don't need to seasonally gather territory, so most of them don't have such a strong imperative to defend their territories by driving you away.
Both males and females are known to sometimes choose a human they like, and hate the other one.
This is a big point: Females get gravid every year. Many igs have defects in their environment (way too dry) and food menu (we don't know "everything' about their dietary needs yet), lack of exercise, and many owners feed the wrong foods, gravidity may fail to progress naturally causing all sorts of big ticket vet treatments and surgeries, and even the rare death of the gravid female.
I choose to have males so I can avoid those possible vet bills. The trade-of is, they tend to be bigger butt-heads, but that is not true in every case.
When you choose to commit to a baby or juvvie iguana, who can't be sexed yet, yet it turns out to live it's full life calmly and sedately after taming, it's like you have drawn four aces. It's true that choosing a juvvie ig is a crap-shoot.
When you study a dozen or twenty baby igs at once, look for the calm ones. Mostly it's thought that the calm ones are sick. But among the calm ones are some who have unusually calm personalities.
Story: I saw six puppies of one litter, and one displayed strong fear or some kind of reticence, others showed exuberance, and one or two displayed calmness. I'd pick a calm one and take it right to the vet just to make sure it was healthy. Henry Lizardlover says he picks his unnaturally calm igs by watching the behavior of individuals in a group of babies or juveniles, and picks the calm ones.