Great collage here by the Wizard this Thanksgiving day. I call it the fat neck collage because it shows that the shooter had a fat neck. Ruby did not.
We keep honing in on the back of the neck because, frankly, they didn't give us much else to compare. They deliberately kept the Shooter's face out of view. But, Ruby had a longer, leaner neck, and he had that scruffy hair growth which darkened the back of his neck. Everything counts, and these are two different guys.