I just tested the newest beta build on the premade level 80 shaman and the premade lvl 80 druid - this is obviously solo, so without class synergies. I was able to parse an average of 1620 dps on my shaman, 1650 dps on my druid (on lvl 80 training dummy). I experimented a bit with castsequences to get it right, but I might have missed some timings. Even so, after testing I'm really not that worried about the dps issues. Should it turn out that the druid has 100 dps more than the shaman, I still think the synergies will make it worth it.