Bakedaflol
The Arthritic Arch-Druid
ilvl33 artifact gives:
37int
12stam
8-8stats
ilvl25 mh+off gives:
19+10int (29) + 5 offhand enchant (34)
5+5stam (10)
3+3+3+3stats (12)
So staff gives more:
+3 int
+2 stam
+4 stats
With sockets it mh+off give +1int -2stam
I dont count socket heirloom mace. Ofc thats bis.
Maybe i a wrong, but I have counted these.
33-34 mh+off artifact also nice, but druids dont have that.
Normal 25mh+off also depends with +speed/leech stat or secondary stat variety
The off-stat choice in other weapons might make a difference, depending on your build.
Also consider that you can get off-hand with gemslot+tertiary proc from Atal'Dazar. Wich is a grind, but lets face it: Ya'll wanna be geared? Work it.
Farming out BFA quests can give you some luck on a weapon.
For boomkins, artifact is just a great wep to get before you start grinding out gear for real.