And again you're simply boiling it down to technicalities. Yes, you do 200 potency per target, but it doesn't change the effective damage output increasing the more targets you put up. You seem to be the one not understanding how it maths out. Whether it's 3 enemies or something like 18 enemies, AoE's will always be stronger regardless. This is true of things like Decimate as it is for Bloodwhetting. If you can't math that out then I don't know what to tell you.
Welcome to FF14 where guard rails have to be implemented because these same 5-year-olds can't hit Diversion or Mana Shift the healers to make sure they don't run out of mana. The game has unfortunately had to get easier over time since players can't be trusted with a single thing. In terms of WAR though since everyone loves to rail on it here, back in SHB it's basically just throw out Nascent Flash since it would heal. Long as it healed, even the 20% mitigation from Raw Intuition didn't matter much. They eventually changed it so there's a reason to use a single target or the support version.
The question has long since answered yet the wrong conclusions repeatedly get drawn out. Clearly it isn't balanced considering the start of the thread, so the solution is to...weaken WAR? Yeah that won't change much but make unhappy WAR's. Making Dark Mind actually good though, maybe even throwing in a bone with Blood Price? The only people who hate that are the same ones wishing for Stance Dancing back because it just took so much skill.
Congratulations on explaining why AoE's work better than ST in general. This isn't different from Nascent and Bloodwhetting. The actual potencies aren't even needed, 3+ or more, things that hit multiple enemies are indeed more effective, and get even stronger with more enemies. It's not the potency itself going out that boosts, it's how many that feeds into it(Bloodwhetting) or how much goes out in general(3 vs 18).
Or instead of looking at something that hasn't been a problem, look into something that repeatedly gets brought up. I want DRK to be stronger, that'd be nice to see. WAR is fine, needs the bind part of HG removed entirely and the physical reflect on Vengeance I could care less if it was there or not, but otherwise it's doing quite fine. Going backwards is just using Nascent Flash once more and ignoring Raw Intuition, again. That's less kit interaction and more of finding the viable button.
Guess well just have to see what comes next in Dawntrail though eh? Cheers to DRK hopefully.