How do you think, what's better? Considering that I have one weapon on my fury warrior with Executioner enchant. 1280arp soft cap and 6 gems +20str with temporary proccing +120arp Executioner enchant or 1400 arp hard cap and useless Executioner enchant? I can't change Executioner enchant to berskerer, need it for pvp.
Armor Penetration Cap
Armor Penetration can seem a bit tricky. The cap is 100% (1399.3~ rating) and this is the stat that i get the most questions about. Armor penetration is better the more you have of it. At some point, it becomes better to start fully stacking it rather than concentrating on strength. This point will be different for all and fully depends on gear, using a spreadsheet will tell you this exactly, but at a guess it will be around 70% with full gems as ArP. Getting this cap will increase your DPS hugely, and is what you'll be basing the majority of your upgrade choices on eventually.
If you are focusing on PvE, 100% arp is a must. So, you should change the executioner to berserk if you wanna maximize your dps.
If you are fine about wasting the executioner (by beeing capped) because of PvP, it will be a choice. Not optimal, but there is nothing to do about it if you wanna keep the enchant. There will be no perfect solution for this scenario.