maybe they purchase their gear from yyzcanuck, who only sells Deeluxe...
maybe they purchased Deeluxe because they were on sale...
maybe they have a narrow foot, which is better suited to the Deeluxe shell...
maybe they bought their boots used, and considering that Raichle/Deeluxe boots saturated the market prior to Head coming to the scene in 2005(?), you are more likely to find used Raichle/Deeluxe boots...
maybe they purchased Deeluxe boots without ever having tried on, let alone ridden another manufacturer's boot...
:)
The last time I did a shell fit on Deeluxe boots, my foot spanned the width of the shell with no side-to-side movement, now add a liner and I would be in agony in a matter of seconds. I wear HSP's because they are the widest last that I have found and I still need to have them stretched.
That said, I have to be cautious that I don't drive my back knee into the snow on every toeside turn that I make. Part of it is I drive my knees hard and flex the boots like crazy, the other part is I tip the board high on edge, which brings my knees closer to the snow.