This info is updated after TBC afaik. They lessened the chance to glance by 15% from 40 to 25, and nowhere did they document the change in severity of the glance thereof.
I get avg hit/glance for one WWS
Wow Web Stats
399/585 = .682 teron gorefiend
380/508 = .748 supremus
435/786 = .553 Akama
612/862 = .710 requiliary
432/581 = .744 Gurtogg
which is within the limits I had posted.
Rogues and sword warriors will be a higher percent because they get more main hand attacks than offhand, thusly throwing off the percentage towards main hand. Also with windfury, main hand will be more prominent which is valuing glances in the offhand as a lower percent. Also, fury warriors' WWS replaces the white hit with heroic strike, which also screws up the numbers. Also, each player is not always throwing out constant damage range in the fight, which can also skew numbers in favor of hitting harder on glances when those numbers are active versus not glancing when they are not... Glancing mechanics cat be accurately shown in a raid environment unless controlled.
Try just auto attacking on hydross, heck you could even go into MC or BWL to do this, without any +ap procs or windfury or any extra attacks or anything, and check the WWS there. A fury warrior, non-sword spec rogue or arms warrior will only work.
As it is currently working, most trinkets are only counted once no matter if you have two of the same, and when switching any item in a drop down menu, you must refresh the selection 2-3 times to converge on the correct value using (CTRL SHIFT Y) or selecting the same item again. This bug is only happening on drop down menus and I am trying to figure out why, but the numbers are still right.