I have asked both druids and shamans on the wow forums to help me find the druid pewpew as greater than or = to a shamans. So far no one can find it. As far as i can see wrath is the closest thing druids have come wotlk. I assume that now druids compare because LB doesn't scale nearly as well as starfire. Starfire gets +120% spell damage and LB gets 79.4%, but this will change in wotlk.
As i have looked at it i come up with this:
This is with what we know of wotlk so far and not counting "earth & moon", "natures grace", "elemental oath", or "lightning overload". It does include "concussion", "moonfury", "Master Shapeshifer", "improved insect swarm" and "Genisis" 1pt.
In 6 sec shaman casts 3 LB for ~2409 damage and +313.2% spell damage (30% mana)
In 6 sec druid casts 2 SF for ~1670 damage and +240% spell damage (32% mana)
In 6 sec druid casts 4 wrath for ~2454 damage and +268.4% spell damage (44% mana)
Earth & Moon would only add another 95 damage on each starfire. If wrath had the benefit of E&M for three of its casts it could generate 2656 and if it had the benefit for all four casts it could generate 2724 damage in those 6 sec. I had thought starfire was supposed to be the big money maker but it looks like wrath will be a better dps generator in wotlk.
Just looking at 1000 spell damage lightning bolt would be at ~5539 damage, wrath would be between ~5134 and 5404 damage (depending on if none/three/or all four got E&M benefit), and starfire would be at ~4070 damage.
Eclipse and Owlkin frenzy can really change this as both of them can add +10% damage to wrath. Wrath could be getting +51% damage from all buffs in the trees. I am using the E&M off mmo.champion as +13% damage buff. Eclipse can only proc once per 2 min it looks like and the owlkin frenzy needs to be taking damage to be procing. At 1000 spell damage if all the buffs proc for wrath then it can generate ~5664 damage in those 6 sec. I don't know how high spell damage will get in wotlk, but at 1500 unless the spell coefficients change the shaman with LB will be out ahead again. And to get the wrath ahead of LB needed a lot of stuff to line up, and this still isn't counting even a single proc off of lighting overload. I didn't include any CL because it looks like its coefficient isn't buffed like LB and so LB seemed like it would be ahead.
So besides the straight damage of spamming bolts druid has moonfire and insect swarm and the shaman has flame shock and lava burst. Unless i am reading it wrong the druids spells will not come out ahead of the shamans spells here either. None of this counts any shaman fire totem damage or any of the bonus spell damage effects of fire totems or flametongue weapon.
Looks like starfire can have a 12% to 22% crit and wrath can have a 9% crit chance where the shaman has a 5% to 14% crit chance on LB depending on talents and procs of elemental oath. If the boomkin aura gave the 20% spell haste instead of the 3% spell haste it would seem to help them with pewpew.
I know all of this doesn't take into account that the druid can stealth and the shaman can't, the druid can pounce to open and the shaman can't, the druid has roots, faerie fire, cyclone, instant hots, travel form to break snares and roots and a bunch of other stuff. I am not saying druid is not an awesome class with a ton of fun and potential. In 1v1 duels all these things come into play huge and probably factor into a MB situation as well. I was just looking at raw dpsing power and wondering if the druid can compare to the shaman?
