Crit > Str > Mastery > Haste for
Str > Crit > Mastery > Haste for
Crit is so ridiculously good. It increases Enrage uptime which increases damage done and generates rage. It enables Raging Blow and turns 'on' your Mastery: Unshackled Fury.
So I really don't get why STR is apparently still better for SMF.