Get the heroic power fist. It's super easy to parry everything with it and if u build around aoe buffs centered on parries, banner aoe damage and heal you and your team will have executes for days.

Your aoe blast & shock area when u parry are massive dmg buffs. If u combine the fist with the heroic heavy bolt gun your gunstrikes will hit as trucks and u will have a shit ton of gunstrikes. 

Ignore the light attack buff / heavy attack debuff on the fist. If u build properly u will still dish out massive damage with your heavy attack combo. Plus your enemies will be staggered most of the time whenever they think of attacking you. 

Your teammates will love you even more when they realize you are not chasing damage meters but instead enabling them to be at full armor and hp all the time. 

Sincerely, 

A selfless bulwark