Weapon damage scales with main stat so yeah, if SE didn't change the formula on WD, it is higher just because of that. If we take a look the only available weights at this time (dervy's drg weights) this is true, drg WD jumped from below 10 to over 12.

Basically until we know the exact new weights on BLM no one can tell you if chest + accessory or weapon will be the better choice for the first 3 weeks, but I think WD is the safe bet. Just buy the wep and glamour your Hive over it. ;P