Bearfoil
The vertical movement of the Rudder is not "upwards and downwards". Here, "vertical" refers to the sweep of the Rudder (Loading) as a vector 90 degrees to the Vertical Stabiliser measured spanwise. The "designed for" load is "sideways". ("vertical") Hold a model of the a/c level, then roll it 90 degrees. As the Rudder articulates "up and down", this is your "vertical". (relative to the VS.)
I now agree with your above reasoning. The description provided by the BEA must have lost its meaning in translation.
I did some numbers around the 120000 newtons and they didn't compute, no 36g to be found there.
mm43