- Which classes do not benefit from pet focus
- Does pet focus work on swarm pets
From Sancus' Analysis and conclusion:
The lack of change between focus levels has nothing to do with high end players fighting mobs 5+ levels beyond their own, which is fairly uncommon. It's also very untrue that mobs 5 levels above a pet's level will be hitting close to maximum on each hit. In general, level has a very small impact on incoming damage. It doesn't matter if you're fighting a blue con, a yellow con, or a red con, pet foci simply won't change the DI distribution or avoidance, and, by extension, pets will take the same amount of damage.
I think it's misleading to claim that pet foci have a large impact for grouping/solo players when, based on dozens of hours of actual parses, they don't.
For reference, when TDS first came out I took 30 min parses with both our level 96 and 101 air pets on a yellow con parrot IIRC in Brother Island. Here were the distributions:
Shard of Air: Buffs: Burnout XI Rk. III, Surety Rk. II Puksu (Sancus) - vs - An eyepecker squawker Real Hits: 2969/3715 - 79.92% 1974: 1313/2969 - 44.22% 2469: 113/2969 - 3.81% 2963: 110/2969 - 3.7%
11366: 63/2969 - 2.12%
Convocation of Air: Buffs: Burnout XII Rk. I, Surety Rk. II Puksu (Sancus) - vs - An eyepecker squawker Real Hits: 2855/3689 - 77.39% 1974: 1298/2855 - 45.46% 2469: 97/2855 - 3.4% 2963: 95/2855 - 3.33%
11366: 47/2855 - 1.65%
This is the impact of a whole new pet spell, with my pet's level increasing by four. The new pet had a whole 1% increased chance to receive DI1, and that was more likely attributable to the RNG. That should illustrate how little level matters with regards to incoming damage.
And here's data regarding different pet foci on a blue con (also taken at TDS launch):
DI Distribution: EM 21: Puksu (Sancus) - vs - A twisted treespirit Real Hits: 2455/3290 - 74.62% 2298: 1329/2455 - 54.13% 2874: 90/2455 - 3.67% 3450: 75/2455 - 3.05%
13242: 3/2455 - 0.12%
EM 20: Puksu (Sancus) - vs - A twisted treespirit Real Hits: 2436/3231 - 75.39% 2298: 1295/2436 - 53.16% 2874: 68/2436 - 2.79% 3450: 87/2436 - 3.57%
13242: 5/2436 - 0.21%
EM 15: Puksu (Sancus) - vs - A twisted treespirit Real Hits: 2423/3294 - 73.56% 2298: 1272/2423 - 52.5% 2874: 95/2423 - 3.92% 3450: 86/2423 - 3.55%
13242: 3/2423 - 0.12%
All of those numbers are within the margin of error. In other words, pet foci really don't do anything other than very small increases in HP. This is true for end game mages, and it's true for soloing mages.
--- Experimental Design It could be good to make a paragraph regarding experimental design, especially if we want to reverse engineer game mechanics.