While leveling I noticed changing weapons didn't increase my damage at all, and that I really only scaled with attack power to incraese raw damage.
I have the Fleshling Simulation Staff but my friend is telling me to buy Earthwarden because it has more dmg. Earthwarden doesn't have the 457 attack power when in cat form though, which seems huge to me.
Yes, shapeshift forms don't take damage from weapon but Blizzard introduced weapons with 'attack power in form' to compensate this, so you need find better ilvl weapon like another melees.
Earthwarden increases attack power in all forms including Cat Form.
Oh it doesn't say it on the weapon so I didn't know.
Edit: I just went and looked at the weapon and realized it does indeed say it on the weapon. I looked at it on my paladin first which is why it wasn't there. Whoops.