If a rogue or any other class with Knight secondary were to stat for PvE DPS it doesn't matter how much more %PDef they get, they wont be able to tank much. If they do sacrifice PAtt for some PDef then their DPS will be considerably lower. And sure they may be able to pop Evasion and probably take 1 hit when tanking a boss if they use Egg Rice, but they won't be able to tank the trash mobs. They have no AoE aggroing skills like K/x or Wdn/W. It isn't reliable. You can't tank a boss if you can't get through the trash.
This was an issue at the end of Ch3 where R/k's were in fact tanking and there was no need for an actual "Tank" in the party. The newer instances have made the "trash" more difficult to thwart this method. Although if EA were un-capped you would see more R/k's tanking in situations they couldn't before. I'm not sure what the new % would be at 70 but I would think it would be rather crazy high. This + House buffs and Potions/foods alone would be enough to move certain combos into tanking and farming certain instances. the one combo that would really shine in this change would be W/k and shove knights down even further instead of actually helping them. The W/k would gain Pdef and not have to drop Patk at all and could actually gain a Patk or two from it because they could drop a Pdef stat or two.
Then on top of it there is siege where this added Pdef would make certain combos much harder to deal with.
Quoted from "mikkehboii;500189"
If a rogue or any other class with Knight secondary were to stat for PvE DPS it doesn't matter how much more %PDef they get, they wont be able to tank much. If they do sacrifice PAtt for some PDef then their DPS will be considerably lower. And sure they may be able to pop Evasion and probably take 1 hit when tanking a boss if they use Egg Rice, but they won't be able to tank the trash mobs. They have no AoE aggroing skills like K/x or Wdn/W. It isn't reliable. You can't tank a boss if you can't get through the trash.
