Also been trying out full lethality for a little, havent played it since 2.0 really. I can beat hybrid on a dummy easily, but i can never reproduce it on a live fight for some reason
Yes, this is universally true. Reason are three ways, starting from most important
1) Other slingers are stealing Hamorrage stacks. In real raid you actually use 3-4 stacks out of 10 for yourself and that is if you keep that in mind and are lucky.
2) You can't really depend on roll damage
3) Spec is really really bad againts low hp targets, also swapping is tricky. If you swap right before reapplying dots, its ok, but if you swap in second part of rotation, your Hemorraging Blast has to be replaced with basic attack, which is meh
Anyway, 1 >>>>> 2 and 3. With no other slingers/scoundrels in raid, df can do wonders