Standing cable chop video?

I’m new to the standing cable chop exercise. I am wondering about the accompanying video because

1) it doesn’t really illustrate the same movement as the animation, and

2) when I tried to execute as explained in the video, I found that I was mostly working the triceps of the arm closest to the weights.

In comparison, this video shows the movement of the animation. When I tried it, I found that I was activating my abs and not so much my arms. (I chose that video arbitrarily among a myriad similar videos on Youtube.) What gives?

Thank you.