I'm not seeing any difference. In both gifs he comes down vertically with the point of the elbow. One is just more blatant than the other.
The motion is what is illegal not hitting someone with the point of your elbow. He is using a forward motion on Chael not 12-6. It has to be straight up and straight down like the second gif if you change the motion slightly in any way it is legal. The rule is pretty absurd.