Here are the seven button-down shirts whose collar roll dimensions are covered in the shirt Matrix. I elected to use a heavy tie which shows to advantage with larger collars, while disadvantaging shirts with less voluptuous measurements. Shirts with smaller proportions deserve to have a lighter weight tie, but for purposes of this comparison, I did not level the playing field.
Warning: Spoiler! (Click to show)
Brooks Brothers OCBD
Land's End OCBD
O'Connell's end-on-end BD
Did all these shirts have the same neck measurements? Some look might tighter than others (or perhaps the tie was tighter).