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Lava lash is hitting completly randomly, one time your doing 100k crits, the other 40k, but wasn't weapon damage supposed to be steady last time I checked? With frost dk Obliterate damage isn't so "jumpy" even if it is physical damage (unless clearly you're hitting a protection warrior or a blood dk, even Cata Lava lash damage was steady). Plus Windfury deals less damage than normal hits currently and it's a noticeable loss vs cloth and leather classes.
Enha has the most powerful burst of MoP and Ascendance is in fact the only thing that saved enha in pvp from being completely underdog in this expansion. Instead of trying to flee or immediately popping defensives, here people will walk towards you like nothing happened, I'm not feeling like I'm bursting with enha on these servers at all. My shammy is my only char where I don't feel the damage scaling from gear. I can get wrecked easily by dks or warriors, simply because I can't generate Maelstrom stacks and 60% of LLs and SSs are parried or dodged. I'm waiting to see hit, expertise, parry and dodge rating fixed to see how far enha is from retail, because nobody can't tell. One thing for sure: currently enha is far from being enjoyable and it's instead completely frustrating.
However thank you Indipender, finally someone who can notice enha damage is not "completely blizzlike" like some smart "tester" wrote on this thread.