I'm sure you're right, but I'm having real trouble seeing how Haste is our weakest stat.
If you're not going for One with the Pack and you're not going for Haste then you're relying on pure luck for decent Frenzy uptime. I don't see how you can value Mastery over Haste when surely the value of Mastery is uniquely tied to Frenzy uptime.
Again I'm sure it's right just having a hard time seeing it. Also feeling sluggish as hell with low haste.