It is also worth noting that the skis are not built in pairs, they are built one at a time and matched after finishing. Additionally, despite the humidity, temperature controlled environment and amazing levels of precision, some skis are simply faster than others.
And even the people who build them cannot explain why.
At the factory in the video, there were stacks of top sheets and bases with both brands graphics and they could switch back and forth very quickly.
In Salanche, just outside of Chamonix, there is a very large Dynastar factory where they build both brands as well but there they build consumer skis in very large numbers. Much more automation and a massive operation.
Having worked in a small ski factory for a few summers, it is really impressive to see it on a big scale, but even there so many steps are done by hand and were quite familiar.
pliny the elder