Yes, but there are so many variables that can be taken into consideration, what's the harm in taking one more variable into consideration? Especially one that, unlike genetics or fast healing time, can actually be modified to your advantage like amount of skin.
Sorry, I see a definite trend. Talking averages, circums gain about 1 while uncircums gain 1.5. That's a half inch difference so far. I think the difference is that the extra play allows for more force to be applied to the ligs before pain from stretching skin makes the Penis Enlargementer lighten up.