Considering the recent discussions on haste builds theoretical DPS versus mastery builds practical DPS, I thought that I should do some analysis on the situation using FD to roughly quantify it. For this analysis, I used my character instead of the BiS setup in the Best Possible Thread since I am more comfortable with the setup for my character. My ilevel is 385-6, so the result may not 100% translate to 391 gear set, but I assume that there will be a lot of parallels.
The haste build is the setup currently on my character where I have just enough haste rating to be barely above my crit rating so that Matrix Restabilizer will always proc haste. FD does a great job of modeling the haste proc anytime it occurs. The setup uses the RF, SS, and AS glyphs since I still cast AS when under no dynamic haste effects. For this setup my stats on gear are:
| Stat | Amount |
| Agility | 6009 |
| AP | 190 |
| Hit Rating | 968 |
| Crit Rating | 2093 |
| Haste Rating | 2100 |
| Mastery Rating | 654 |
| WQ% | 24.46% |
For the mastery setup, I kept all talents, glyphs, and shot priorities the same and only reforged gear to get as close to the 1235 haste rating for the 12.93% haste case with 3/3 Pathing. For reforging, crit still had priority over mastery when I could reforge into either.
The main difference in this setup beyond the reforging is that Matrix Restabilizer no longer only procs haste. If Hungerer is not currently procced when Matrix procs, then Matrix procs crit instead of haste. FD does not model the crit or haste proc dynamic choice and instead assumes it is always a crit proc. FD does not accurately model the crit proc since it averages out over the whole fight. This actually hurts this case some in FD since the additional average crit from the proc at the start of the fight during the CA phase is mostly wasted since AI and SS will already be near or at the crit cap. Plus, in actual game play, Hungerer will usually proc first at the start of the fight making Matrix proc more useful haste during the CA phase.
The resulting stats on gear that changed are:
| Stat | Amount | Delta |
| Crit Rating | 2120 | +27 |
| Haste Rating | 1358 | -742 |
| Mastery Rating | 1369 | +715 |
| WQ% | 32.84% | +8.38% |
The comparison of these two setups in shown in the table below:
| DPS | Haste Setup | Mastery Setup | Delta |
| Total | 36558 | 36216 | -342 |
| Hunter | 31752 | 31688 | -64 |
| Pet | 4806 | 4528 | -278 |
As can be seen, the total DPS loss is 342, which is the equivalent of replacing about 2.7 AIs with ASs, when moving. Considering that AI cast time should normally be longer than the AS GCD and costs more focus, you should be able to replace more ASs per AI than 1 for 1 when on the move. Hence, I can see how the mastery build can be comparable DPS on small movement fights and maybe better DPS on high movement fights. Also better modeling of Matrix dynamic haste or crit procs will add DPS to this case as well. Also need to account for the negative difference in autoshot DPS from the haste setup when having less AI lockouts.
Furthermore, the majority of the DPS loss is in pet DPS due to about 5.5% in WH uptime. Only about 64 DPS is lost in hunter DPS.
More details on the difference between these two cases are:
- The mastery set up case does more damage per shot since it has a higher crit rate due to the little more crit rating on gear and the average crit rating from Matrix procs.
- The shot differences between the two cases are 10 AIs and 5 SSs in the haste setup versus 10 ASs and 30 WQs. The number of autoshots are the same between the cases due to the AI lockouts.
- The 5.5% difference in WH uptime occurs despite the same number of shots that proc Sic’Em. The difference is more AIs during the CA phase with almost guaranteed Sic’Em procs in the haste setup. This difference would be reduced if FD modeled possible Matrix haste procs during the CA phase, which would also reduce the pet DPS differences.
The next item I investigated in regards to these setups is the impact to AoE DPS. Since mastery is touted as a big gain for AoE DPS, I figured that the mastery setup would be far superior. The results in FD contradicted this as shown below.
| # Targets | Haste Case | Mastery Case | Delta DPS |
| 1 | 25817 | 25888 | 71 |
| 2 | 31084 | 31099 | 14 |
| 3 | 36352 | 36309 | -43 |
| 4 | 41619 | 41519 | -100 |
| 5 | 46887 | 46729 | -157 |
| 6 | 52154 | 51940 | -214 |
| 7 | 57421 | 57150 | -271 |
| 8 | 62689 | 62360 | -329 |
| 9 | 67956 | 67571 | -386 |
| 10 | 73224 | 72781 | -443 |
The AoE cases used the same setups as for the single target cases but changed the abilities used to just ET, MS, SS, KS, and AI MMM procs. I also reduced the fight duration to 1 min with not including any RFs or BLs.
The mastery case actually has better single target DPS mostly due to the higher crit rating but also due to the extra WQs. However, surprisingly it has lower multitarget DPS. The reason for this is that the mastery setup did 2 less MSs due to less time for instances with longer SS casts to regain focus and due to the lower base focus regen rate at this haste rating resulting in less focus available for MSs.
One major factor not accounted for in this FD analysis is the benefit of Rapid Killing returning 50 focus per AoE killing blow. The bonus focus will favor the mastery setup case since it will help to eliminate required slower SSs to regain focus once AoE targets start dieing. Just reducing the MS cast difference by 1 due to RK adds another 230 DPS per target to the mastery case, which would make the mastery setup superior to the haste setup as expected. The mastery case would now do about +173 DPS per target over the haste case.