Simulations done with S2M/Legacy and AS/San'layn and all their combinations. Patchwerk (tank n spank) and helterskelter (movements, interrupts, stuns, target switching AKA realistic fight) both tested on 1 and 3 targets.
This is the result of my simulations:
https://docs.google.com/spreadsheets...it?usp=sharing
A note is that I don't have my second gold trait, not sure if this would change the stat weights anything.
Everything claimed here is only true for my characters current stats and gear,
which mostly consists of haste gear.
The simulations may consist of errors as each simulation "only" had 25000 iterations.
tl:dr I didn't finish high school math -
Generally for encounters at 400 seconds (raid bosses in general) :
Crit > Mastery > Int > Haste > Vers
Generally for encounters at 100 seconds (mythic dungeon bosses in general):
Haste > Crit > int > Mastery > Vers
So you might wanna consider having some crit/mastery in you gear if you want to perform in raid environment.