Goredrinker VS Hashr Claw

I am a level 42 assassin and I always see people say Hashr Claw is the best for my level, however whenever I create a build in wynnbuilder it always tells me that goredrinker has the higher DPS. I currently have a Goredrinker with Thunder powder and Firepowder both tier 6, however with and without the powder it keeps telling me it has a higher DPS.

 

If you were to add powders to hashr's claw, it would have a higher DPS than a powdered goredrinker, especially If you added water powders, given hashr's claw has water bonuses