OP I think this is more so situational as Savage requires STR tanks or you won't even make that enrage time unless dps are over geared...

Casual content doesn't really call for a STR tanking unless you want to get done faster which is like maybe 3-5 mins faster depending on dps

Me personally I have always used 3 str accs and 2 vit accs and my points are half and half STR and VIT just because I do like to dmg as a tank even though it's not my primary job but by no means will I go full STR everything as I've seen those tanks who's hp is lower then my DRG lol but at the end of the day it's all about knowing your CDs and enmity rotations...tanking isn't difficult either way