If I have 2 1 handed weapons equipped, and then I put my 2 hander in my main hand, my pvp power increases by 10%, but if I have 2 2 handers equipped and I put my 1 hander in my off hand, my pvp power decreases by 10%
I'm not sure if it's just a visual bug, can't really test it with a dummy, but I'm guessing it's not because I've already seen more than 1 warrior abusing this bug.
PvP power stats are kinda confusing for fury cause I believe 2h + 2h doesnt stack but 2h + 1h allows for like 70% pvp power while 1h + 1h might stack (or not idk) sooo confusing :D
Equipping Two Hand + One Hand gives you extra PvP Power but you lose out on some other things.
As for the last screenshot, reequip your 2h in main Hand.