Gee, in a world of lawsuits, a tazer company's own experts deny their product was used in the murder of a little girl. Imagine that! The Denver pathologist who looked at the marks for the Boulder police said that a stun gun is the most likely cause for the marks. I saw a telivised experiment that was done comparing the marks on her autopsy photos to stun gun marks made a pig -- looked pretty darn conclusive to me.
Did you really look at those marks, which, BTW, are abrasions, not burns?
If you magnify them, they are exactly the opposite of one another. One set has a very dark center, with lighter tissue radiating outward from it. The other set has a very light center, with gradually darker tissue radiating out from it.