You gave us ‘fjord cutter’ which is a barb 1h mighty weapon (and needs a buff). However, there’s nothing to really go with it. Also, most of a barbarians damage enhancements are on our weapons. having a 1h take up either the cube slot or have a relatively useless offhand when dual wielding is pretty bad. WW barb is yet again, for roughly the 16th time, by far the top barb build. You need to look at these items and abilities again.
Having ‘fury of the vanished peak’ 2h mighty weapon become a 1h mighty weapon gives barbs a meaningful seismic slam offhand. Thus having a worth while “set” to use. This will open a slot to allow another weapon so that another build can hopefully compete with WW barbs.