You can tell by looking at the letter spacing that the memos IS kerned. Kerning determines the spacing of characters based on size and shape. The link I provided describes complicated algorithms required to accomplish kerning.
So why isn't the word "kerning" getting to be as familiar to the public square as the F word is (maybe soon it will become a synonym, I don't know)? It really is a door slammer, so why all the foreplay on other less conclusive stuff, he said, she said, the wife thinks, the son thinks, the non expert thinks, the handwriting matches (copy and paste), etc? Why not just go for the throat?