very very easy fix for coding for 2 hander ww barbarian
put the same ias break point for 1 hand and two weapon for whirlwind and 1 hand weapon will still end with more dps and on top anyway because you hit x2 more also the Avg dps of x2 1 hand is more dps but at least the gap will be more close , also on the top Grief runeword is not design for two hand weapon mean 2x1 hand Grief will always be on top vs 1 two weapon grief
but this change will make 2hand weapon playable , easy fix copie and paste for coding