How to Sim for Assassin PvP?

Hey guys, I'm wondering what the best way to set up Raidbots for simulations of Assassin PvP would be? I don't fully understand the way stats scale in an instanced pvp setting this expansion, and feel like I'm optimizing incorrectly.

If I set up a Patchwork sim with my pvp talents set up, i get Agility > Mastery > Vers > Crit > Haste. According to every pvp guide I read, this is severely undercutting the value of Haste lol.

What do you guys do to determine stat weights for pvp?