Since the minimum required value may be far less than the actual capability of the airplane
Conversely, it may be very close to the demonstrated value eg the Rockwell Commander singles, when they were introduced to Australia, came with a 15 kt X/W, as I recall.
One intrepid DCA TP (CJF) and I redid the test points and frightened ourselves at around 18 kts which was reasonably limiting. Not having looked at any recent Commander flight manuals, I don't know if the 18 kt limit still exists or if, with the transition to OEM manuals, it has gone back to 15 kt. Nice birds but never did like interconnected controls.
If everyone were to be trained on Supercubs, crosswinds wouldn't be a problem .. just a personal view, mind you.