Those are really close together - around 1%. The only significant difference between the sets is the trinkets. Ranking the special effects on trinkets is going to have some “fuzz” involved.
Those two sets of gear are so close together in DPS that you will never be able to tell the difference in-game. That being said, I’d understand if you just didn’t want to use grong’s primal rage. Frankly I’d just scrap that thing even though it’s theoretically ok.