I think I understand, but have no number to give you. I only offer the concept which is intuitively recognizable without such a value.
Loosly translated as:
I was fooled when I read about it because it sounded so scientific.
or
I have not clue what it means.
Given what I understand complexity to mean it is probably that both a mammal and a reptile are more complex than an amoeba (but I can't prove it since I don't know what complexity is). I am pretty darn sure that a reptile and a mammal are about the same in complexity and it would be very difficult indeed to figure out if there is an difference.
Guessing what "specificity" is (and making up a bit of definition of my own)I would say that in that sense they all have very close to zero specificity. So close as to be safely approximated by zero. If you think it is significantly greater than zero you will have to show that.
Rob, you've been had. You've read this stuff somewhere and thought it was really hot stuff. It is just random words made up to sound good. When questioned on it you've gone off into words without any more meaning that the ones that were used to fool you. Try again. I'm not fooled.