Yes they were. At this time we don't know if Caylee's hands were or were not, but the absence of duct tape binding the hands of a small child does not negate the fact that it WAS present on her face. I would think duct tape binding hands would be a method to fully retrain an adult whereas it would be easier to restrain a child without binding their hands.
I agree.
The motive behind the killing, the relationship of the killer to the victim and even the sex of the killer needs to be taken into account too.
I wouldn't expect a mother getting rid of her burden to kill the same way that a boyfriend who wanted his victim helpless so he could toy around (for feelings of power or whatever) would.
A mother would want to get it over with and out of sight.