I have this style and the Fora...I wear a 9M, but my foot is narrow.  These shoes in size 40 fit perfect, in the Fora 39 2/3 fits perfectly, as well...I don't get the sizing differences, but hey, both shoes feel the same, and that is GREAT! Perfect shoes...will never wear anything else for long days at work, or walking tours during world travel...get these...you won't be disappointed!