Situation 1- Your attack speed is 1.0.
If you cast ray of frost you'll spend 20 arcane power every second.
But you also gain 10 arcane power every second.
The result is that you'll lose 10ap every second, so you can cast ray of frost for 10 seconds before getting out of ap.
Situation2- Your attack speed is 2.0
If you cast ray of frost you'll spend 40 arcane power every second.
But you still gain only 10 arcane power every second.
The result is that you'll lose 30 arcane power every second, so you can only cast ray of frost for 3.3 seconds before getting out of ap. Not 5 seconds.
assuming situation1 weapon does 100dmg for 1.0aps and situation2 does 50dmg for 2.0 aps:
with the slow weapon you get: 215% of 100dmg for 1 second = 215dps while losing 10ap/sec
with the fast weapon if using the signature spell magic missile(143% rune) for 2 seconds for every 1 second you use the RoF you end up losing 10 arcane per sec which would be the same for the slow weapon which comes out to:
215+143+143=501. 501/3=167(tick avg) 167*2(aps)=334(combined damage%/sec)
334% of 50 damage = 167dps while losing 10ap/sec
0
CD damage skills really get the shaft cuz they only do less dmg with faster weapons but equal dps.
And skills like arcane orb and meteor deplete your ap really fast anyways, so might as well do more dmg.
0
assuming situation1 weapon does 100dmg for 1.0aps and situation2 does 50dmg for 2.0 aps:
with the slow weapon you get: 215% of 100dmg for 1 second = 215dps while losing 10ap/sec
with the fast weapon if using the signature spell magic missile(143% rune) for 2 seconds for every 1 second you use the RoF you end up losing 10 arcane per sec which would be the same for the slow weapon which comes out to:
215+143+143=501. 501/3=167(tick avg) 167*2(aps)=334(combined damage%/sec)
334% of 50 damage = 167dps while losing 10ap/sec