I think it depends on the baby. Baby Moondancer and Baby Glory usually have soft silky hair, even if there bodies show the signs of lots of play. For some reason the hair used on them just seems to resist frizz. But the fancy pants babies, for me at least, seem to be more prone to frizz.
I was actually just getting ready to start a topic asking what the deal with G3 babies hair is because practically every one of those I find has awful hair. Poor babies!