Forum over hyping Stuhn’s Favor, way too much. The real over performing set is Yandir’s Might.
I think it's the first time I have seen a Trial set carries over to PvP like that.
2 – Adds 129 Weapon Damage
3 – Gain Minor Slayer at all times, increasing your damage done to Dungeon, Trial and Arena Monsters by 5%.
4 – Adds 129 Stamina Recovery
5 (Perfected) – Adds 1487 Physical Penetration
5 – Dealing Critical Damage grants you a stack of Giant’s Endurance, up to one a second. Each stack of Giant’s Endurance adds 100 Stamina Recovery, up to 5 stacks. Dealing damage with a Fully Charged Heavy Attack removes Giant’s Endurance and grants you Giant’s Might for 10 seconds, increasing your Weapon Damage by 158 per stack removed. You cannot have Giant’s Endurance and Might active at the same time.
It can be used in PVP as a sustain back bar set(the buff carries to font bar and has no duration limit).
This set's 5 piece bonus alone(500 sustain) is almost equal to the (1)+(3)+(5) piece bonuses of "Trappings of Invigoration"(if you have high stamina recovery bonuses).
Simple heavy attack from your back bar bow, and you trade the sustain for for 790 WP.
You don't even need the perfected version, this is the best sustain/utility back bar set in the game.
You can use it front as well with the perfected version, on many builds it will out perform sets like new moon.
This set is just too good and flexible. They need to change it that the buff don't carry over of you don't have the sets on both bars, and Giant’s Endurance should have 10 sec duration until it wears off. Giant’s Might buff duration should be reduced as well to like 6 sec.