Why are the TT weapons using -x% channeling?

Orose - Sanctuary wrote: »

No: all magic ornaments (rings, necklaces and belts) and magic wristguards may also give -3 to -6% channel.
To that, you can add some legendary gear, like the Rank IV armor (-3%), and some legendary headgear and capes.

Some have been able to stack up to 33% channel bonus.

Orose - Sanctuary wrote: »

When doing some usual grinding, I often happen to be a few 1/10s from killing a mob without getting any damage. Earning this very short lap could have been managed through a -6% channel bonus.

It's not the matter of DPS, but the amount of damage you can deal before your battle ends : since they are usually short battles, DPS is not the main point you should focus on . If faster channeling gives you time for one more spell before the monster hits you (even at a lower DPS), then the channeling speed is beyond overall DPS.
Mathematically, assuming 'n' is the number of cast spells and assuming it is a low amount:
n * DamagePerSpellWithMediumDPS > (n - 1) DamagePerSpellWithHighDPS

If you are involved in a long battle, then indeed DPS is what you should focus on.

And also, channelling bonus should stack to be efficient, because I admit a single -6% channeling bonus is not enough to make the difference.

If you're attacking a monster and your dps is higher then you'll be doing more damage with each hit. That's how i was calculating it. The DPS is the overall damage your'e doing with EACH attack. That's how i was doing it, EACH attack's dps would be higher. So if you can only be doing 4 attacks an extra -6% chan speed would literally do nothing for you. So it goes from .5 to .47 channeling speed. For you to get another attack off as you said that'd mean that the battle would have to go on for a good 16 attacks which would mean that i'm attacking one monster for a good 1min+ or so which is likely. So i may get another attack off but teh DPS as i have calculated it is for each attack. So the Damage is higher with each attack is hitting harder way harder. Since the attacks are actually scaling up with masteries so you're hitting harder with them, so you'll have mroe damage which scales up even more with your other attacks.

In the end of the day though -casting speed woudl be a much greater stat to have for us. The +MAtk would help us increase our dps since that's how i choose my spell rotation. I never use a dot on a boss unless i have a spark and that's simply b/c spark+Dot=greater dps. Our attacks are already pretty fast our main inhibitor is our high casting time almost 2-4x our channeling speed. So if you were to simply look at the items striping all the bonuses from them and only using -6% channeling or doing +20 or so MAtk teh 20MAtk would make you hit harder somewhere in the range of 20-40. So with that as i said before, our spells normally take 2-5 seconds to cast. So that's another 40-200 damage added to our attacks EACH ATTACK. In PvP it'd be less of course and well grinding mobs it'd help out since most fights end fast anyway.