Introducing another consideration to take WoL carefully, not all guild's logs are public. We're in a race for server firsts and are not providing public logs.
As far as haste v. mastery, one person mentioned survivablity and how haste provides smoother MW5 procs. This may be true but in application of it, there would be a difference using conductivity v. AG. AG being dmg based may be less affected during it's duration, however conductivity would seemingly benefit more from a mastery build since it's healing is limited to SS, ES, LB/CL and HS.
From what I remember reading, a haste build shifts our last talent to PE, meaning more overall dmg coming from this cd. Considering movement, the 4pc granting more crits > more flurry, bosses with stage fights etc... where exactly is the viabilty of patchwerk dps as a barometer for what stat to emphasize? ToES as a whole is full of movement if you do Prot's on Elite killing Kaolan last. I believe it was Purge who I read, "...the more mastery you have the more valuable crit/haste become..." and as you increase haste the more valuable mast/crit becomes. All three stats have similar value and while one may pull slightly ahead the dps change is somewhat insignificant and within any reasonable RNG factor. SO, atm it seems hitting harder is more advantageous than hitting faster and playing well using proper cd's etc will get you the top results. I want to be competitive and be a top parser, provided it doesn't come at the expense of playing the content well.