I would just like to mention, that the potencies on WHM might be higher. If MCN don't use buffs and use equivalent gear at level 60, I'd be willing to argue that a WHM might be able to out damage a MCN or come close.
Stone III has a potency of 210
(don't use Aero I on a target dummy with a total potency of only 200)
Aero II has a total potency of 250 over 12 seconds
Aero III has a total potency of 290 over 24 seconds
Fluid Aura has a potency of 150 refreshed every 30 seconds
Assize has a total Potency of 300 refreshed ever 60 seconds
Assuming that a whm refreshes the dots at the exact time the drop and uses fluid aura/assize at the exact time they are available, let's take the lowest common denominator for cooldowns. We can use this to find out a rough estimate of optimal PPS average of a WHM. This comes out to 2 minutes (or 120 seconds). Second let's figure out how many Stone III fillers we'll have. 120 seconds / 3 second GCD (note this is not the actually GCD, however for all intensive purposes we can say that we will get this or MORE stone III's over time) = 40. Then we can subtract the GCD's taken up by Aero III and Aero II (15. See below). So roughly we have 25 or MORE Stone III's over the course of 2 minutes.
Over 120 seconds we have:
2 Assize (300 * 2 = 600 combined potency)
4 Fluid Aura (150 * 4 = 600 combined potency)
5 Aero III (290 * 5 = 1450 combined potency)
10 Aero II (250 * 10 = 2500 combined potency)
25 Stone III's (210 * 25 = 5250 combined potency)
This brings us to a rough (likely higher) total of 10,400 total potency. If we want a rough estimate of PPS, let's divide it by the 120 seconds we did our theory-crafting with. This is approximately 86.67 pps (potency per second).
I have yet to see any math, but I'd argue that without major buffs the pps on MCN might be just higher or equal to WHM. Have you ever thought you might get beaten by a healer in dps? Well, you might just get beat now with how poor MCN's damage looks right now.
~Ocean
Disclaimer: If my math is wrong, I can do some simulations to find the true number of Stone III's over 2 minutes and add in doing the cd's fluid aura and assize at the 2 minute mark (which is not included because they would end up slightly over 2 minutes, 0 minute and 1 minute mark are the only included).