Avoidance Weapons.... (For Tank Warrior)

Cleaver of the Unforgiving: 31 stamina, +20 Parry, Yellow Socket (+3 stamina bonus from socket).
The Brutalizer : 33 stamina, defense 22, expertise 21.
The Unbreakable Will: 308 armor, 33 stamina, defense 21.
The Sun Eater: 22 stamina, defense 13, dodge 19.
Mallet of Tides: 34 stamina, defense 16, expertise 14
Dragonscale-Encrusted Longblade: http://www.wowhead.com/?item=34164

3 Best Weapons

The Unbreakable Will- best mitigation
Cleaver of the Unforgiving- best avoidance ( if you are jewellcrafter then this is even better )
Dragonscale-Encrusted Longblade- best TPS


The Brutalizer- is good but less avoidance than Cleaver and expertise is not needed at all bosses.

The Sun Eater- is best avoidance, but you will find it really hard to hold aggro ( TPS is very low)

Mallet of Tides- It is my believe that Expertise is an unuseful / bugged stat in Legion


aggro holding weapon stats = dps, hit, expertise ( hit do work and needed to reduce miss from a mob, expertise will reduce dodge, there is no parry that I have ever seen)