I noticed (and probably some other players as well) that the stats of equipped items are not displayed correctly in the character window. No matter which equipment slot I hover over (head, upper, lower, feet, back etc.), the same values are shown everywhere — specifically those of the item I last equipped!
In the screenshots, you can see an example with the Military Boots and the Military Cap — each was the last item I equipped before hovering over the other equipped items with the mouse.