In Azor's guide, he says to go Trick shot build if you have the belt, so I simmed different scenarios on my character:
1) Warbelt with PS
2) Warbelt with Trick Shot
3) No Warbelt with PS
I repeated all of the above scenarios with 1,2 and 3 targets and LightMovement vs. HeavyMovement (24 different sims) and 1) gave substantially higher DPS every time. Even 3) beat out 2) in most cases.
Things to note:
1) Non-warbelt sims used Prydaz (damage absorb neck)
2) 2nd legendary was always Zevrym (marked shot ring)
3) Both pieces replacing legendaries (neck/belt) were 880 with Mastery as the higher secondary stat and haste or crit as lower secondary stat.
4) All other gear and talents remained constant (i.e. LnL, Explosive shot, Volley, etc)
Can someone with more knowledge in simming shed some light on why this may be the case?