So, everyone knows these two abilities are not very good. Why? Low damage, no penetration, etc. It has been discussed, and nothing has changed.
Well, with patch 1.1 on PotD we now have enemies with higher AR. So, even enemies with couple points or more of AR to fire almost negate these abilities. They will not do any damage whatsoever.
First let's look at Dragon Thrashed. Once every 3 seconds you do 4 Burn damage, and once every 6 seconds you do 4 Slash Damage. However, because both have such small damage amounts, and no bonus pen you tend to do no damage. So, you don't have