Quote Originally Posted by MamaMiaYoe View Post
oh wait a minute, why thrusting arrow in pve?. We are looking at application of cannons here. kb effect
You need the knockback, especially if you dont have the foundation in hp absorb, not all FA's have that appropriate amount of hp absorb, im sure we got FA's out there who have that concern, probably more on the lower levels. Cannons knocback can save because of this, gives distance and time to recover/flee if the lures go out of control.
If you use either GD or Sonic, knockback won't help because mobs that are stunned will simply stay still. They will not fall down. They will not be moved back. Generally this is the most desirable for holding mobs together for exp purposes. Down would be the 2nd most desirable. Knockback is essentially the worst.

For defensive purposes, you should not need knockback if you do use a lv.9-12 GD. GD stun lasts for 5 seconds, and the cooldown is 4.2 seconds. With GD alone you can defend yourself using stun (and more aoe than cannons), without having to spread out your mobs. Sonic can be a secondary stun, or vice versa, depending on which stun skill you like better (although you need to alternate between both constantly if you have both at lv.20).

Knockback is only useful in pve when you are comboing one/two mobs, because the knockback will protect you while you combo lances (high dps) instead of using sonic/gd (low dps). But when up against multiple mobs, sonic and gd is better all around for the fact that they have more aoe, and they will hold the mobs together instead of spreading them out.