Oswald in the doorway: the blog of the Oswald Innocence Campaign, by Ralph Cinque

Wow, Upperpunk goes all in. He's putting it all on one face. 

He seems to be admitting that if it is two faces, then it can't be Mary Moorman's photo.

So, it comes down to this. Then it's time to rock n roll:

First note that Nix was shooting from about the same angle as Mary Moorman.

It's close. The same general idea. It's in the same ballpark. So, let's see how Nix captured Zapruder.

Now that looks like one face, the south face. And notice that Zapruder is clearly in front of his secretary. She is behind him and also slightly east of him. But, she's behind him.

But, how do they look in the Moorman photo?

They are more huddled togther in Nix than in Moorman, and it's due to the difference in perspective. From Nix's position, he's going to see more of Zapruder and less of his secretary. But, moving east brings the secretary into view better. There was even more separation between them in Betzner.

Notice in Betzer on the left that you see four feet very easily: two of his and two of hers. But, in the Moorman photo, his left foot seems to be between and in front of her two feet. You can still see all of them, but it isn't easy. But then in Nix:

 Now, we're down to three feet. We're seeing his two feet. Is that one of her feet between his? If so, then where is her other one? It's out of view. It is completely covered up.

So, we have a progression here from Nix to Moorman to Betzner, and as it proceeds, the secretary comes more into view and is more separated from Zapruder. 

But, if this was all the south face, as Upperpunk maintains, then it should look like Nix, and she should be more behind him and more obscured. 

So, we are seeing more of Mrs. Sitzman in the Moorman photo than in Nix, and she is more separated from Zapruder. Why? Because the photographer was more east which changed the perspective. But, Mary had about the same perspective as Nix. 
Furthermore, we can see the cubic form of the pedestal on the left in Moorman in contrast to the two-dimensional wall on the right in Nix. It's two faces, two sides of the pedestal on the left.

Now listen up, Upperpunk: I asked you a question: Are you Duncan MacRae?  The consequences, if you don't answer, is that I'll start calling you Duncan MacRae. A lot. If you don't want that to happen, then you'll have to deny being him. Silence about it communicates that you're him. Those are the rules.