from my limited understanding, there is a lot of variation in the sizes of BCC vs BCI and I'm not sure if there is enough evidence to suggest that the differences observed are significant or not. I have seen BCC females that are 7ft and BCI females that are 10. Even the genetic overlap suggests that one might be hard pressed to offer a definitive answer. There may be statistical research out there done by a biology grad student somewhere that compared the differences but I would think that such a study would have to include 30 of each (30 male BCC, 30 female BCC, 30 male BCI, 30 female BCI) all raised in similar conditions with equal feeding schedules to draw a definite conclusion. The parents of the male BCC I just picked up were reported as ~6' for the male and ~8' for the female.