Hi, thank you both for your answers.
As for you question, it looks like the values are pretty similar after the unwrapping but not so much in the displacement map.
Those are values from tutorial (in mm):
And those are mine (in m):
Also Agruno, what do you mean by my pictures are upside down? they are positioned just like in the tutorial (try to look at the line in the upper part of the area )
You both are right that the proportions are pretty similar except for the area on the right side - that is totally wrong and I wonder why.