The problem with the GCDs is that they are as tasteless as the dps nuke, only Whm has in its afflatus heals a GCD that somewhat interacts with its kit, you can change a dps spell for a gcd but it wont make it much better because those GCDs does not offer any kind of depth, interactions, job knowledge, etc...
...You're bringing up a ultimate, a fight with over 15m length, that has multiple phases where healing is necessary and you can't damage the boss, that has multiple sets of downtime and has healing requirements 8-13x times more than a dungeon to a discussion about dungeons. If you can't see how those two can't be compared and the difference between the healing aproach in both I honestly don't know what to tell youUltimate number lol
Worst is that you could only remove 20% of the nuke spam under that context, imagine how little that percentage would become in savage and below where the problem is at its highest.
1) You can spin it the way you want but its a relevant difference that you were handwaving
2) As I've told you, there are no evidence that supports that this difference would be smaller at the average level of play, in fact rough estimations seem to indicate the opposite
3)The % are still wrong the lowest was 13%, the highest 22% and you've had plenty of time to change it since it was indicated
4)If you do that you introduce variables like party comp, strat and patch in which those runs were made reducing the precission by a lot and it was a rough estimation as I said, by simply looking at the jobs in a vacuum you can establish a proportionality between them, if that were to change significantly between a top and an average run that would suggest that the difference between a 1T3DPS and a Standard performance changes in a significant way, it doesn't so if anything the estimation says there is no change in proportionality between a top and an average run as the most used dps is still worth the same amount of highest damage healer
5)Yes, yes it is, in fact if you analyze the logs that you did not open at the beggining you'll see how the bosses don't cast attacks that they do in normal runs, that is because they are dead before they can do it
6)This is a fallacy, we were talking about efficiency and numbers, idc what you think the commmunity wants (besides, no proof again), your initial thesis was wrong as well as the subsequent ones, stop moving goalposts and accept it.