When comparing two characters, the trinkets are not matching up correctly. This occurs because the trinkets are in different slots on the two characters.
Example:
Char 1.............Score...............Char 2
DMC:V(115)........15...............Trinket(110)
Trinket(110).......-15..............DMC:V(115)
The Overall gear score evens out, but since the Darkmoon Cards are in different slots, they are not being compared with each other; they are being compared with the other characters same slot item.
Trinkets and dual wield weapons are the only situation where I could see this happen since you are allowed to have two of each and slots are independant.
Maybe it's not a bug, but it makes the comparison look strange.
Thanks.