The jump in damage actually isn't that big:
- Shadowform increased by 5% -> result in tooltip change
- Mastery passive -> result in tooltip change. With 14 Mastery that's already a 23% increase.
- If evangelism is gone, the 10% are also baked into baseline dot damage. -> tooltip change.
- 10% of the level 10 Orbs on live als baked into the baseline damage. -> tooltip change.
But since he lost a tick (from 7 to 6 i assume), that tick has to be substractet.
Then basically you also have the buffed Inner Fire, which gives you ~600 additional spellpower.
If there is an actual damage buff, it's not that high.
Or to put it in another way: Go on a target dummy on live, stack evangelism to 5, and proc an Orb, your VT tooltip will also be around 60k.