So I’m not sure this is a bug or not, but posting this here because it seems odd.
As you find higher quality recipes, the affix roll ranges do not increase as you’d expect, resulting in Legendary or Rare quality recipes being more of a sidegrade than a straight upgrade.
Using Double Swing Size as an example,
Magic [13.0 - 17.5]%
Rare [15.5 - 20.0]%
Legendary [13.5 - 22.5]%
Frenzy Duration:
Magic [28.5 - 37.5]%
Rare [26.5 - 40]%
Legendary [29.5 - 42.5]%
Berserking Duration scales as you would expect.
Magic [26.0 - 35.0]%
Rare [26.5 - 40]%
Legendary [29.0 - 42.5]%