for all you doubters out there you have to look at the flex in relation to the area of the ski. for example, most people know for a fact that the fujative is softer then the pe. acording to the graph, the fujative is realatively stiff under foot while the pe is less stiff underfoot, however, when you look at the tips and tail(where most of the force is applied when you ski) the pe is stiffer than the fujative. so it all depends where a ski is stiffer or softer to.
information like this has been posted before. someone posted how they did the test further down in the page. heres the thread:
https://newschoolers.com/web/forums/readthread/thread_id/271704/