This is a known issue with items that have +X skill affixes… It can also be seen when equipping other Uniques like Hakar’s Phoenix or when dual wielding them.
It apparently has something to do with what the tooltip is displaying vs mathematical rounding of the actual affix rolls on the items… Dont work for EHG so I dont know the exact detail but I do know that the devs are aware of the issue…
That is pretty much the issue. The item might display a +2 skill modifier but it actually rolled as a +1.5 (but rounded up). If dual wielding them, since the stat is the same it’s added together (+1.5 +1.5 = +3) then rounded. Why the stat can’t only roll in integers I don’t know.