According to FFLogs, AST pDPS >= WHM pDPS in 4.3

[Miste]

Holy got nerfed in 3.0 and 2.0.

2.0 nerf was less potency.
3.0 was that the more mobs there are, the less damage it does.

Yes, but those were pretty much necessary, contrary to what Yuyuka said. It wasn't an unnecessary nerf since if you played WHM back in 2.0 you'd know WHM was AoEing more than a BLM which is an actual DPS job.

As for the more mobs there are less damage nerf they did that to a lot of AoE abilities/spells to reduce how much AoE damage was doing as a whole. It's not like they could nerf SMN/SCH bane and nerf BLM Flare and just leave Holy to be more powerful than actual DPS job kits.

I wouldn't consider these unnecessary nerfs...they were needed to fix balance between roles and jobs, just like when they nerfed Balance Card on AST.

they took away Thunder as a cross-skill. okay, they took it away from everyone, but still a nerf.

It was necessary in my opinion. They can't take it away from everyone else, but leave it on WHM.

they reduced the potency of the medica 2 HoT, but increased the duration... i would call it a nerf

Was necessary due to the hate it generated and still kept the same potency so it isn't a nerf in my opinion. It healed the same amount just over a different timeframe.

they reduced the potency of holy

Answered this above.

they took away the 100% crit procc for Cure 3 and replaced it with a 50% less mana costs procc wich was barely usefull... Cure 3 procc was at least an increase over Cure 2

In 2.0 and 3.0 MP reduction was useful, but it isn't now so yeah this could be considered unnecessary.

later they further nerfed holy by reducing the potency when more than 1 enemy was hit

Answered above.

they removed the 18% stoneskin

This could be considered unnecessary at the time, but I mained WHM still back then so I didn't really find it that bad.

Divine Benison still much better than SS in my opinion.

they removed WHMs proshell exclusivity and didn't replaced it with a proper effect

Other healers getting proshell isn't a nerf to WHM as WHM did not lose anything from its kit.

they took away WHMs 30% / 60 sec cd healbuff and replaced it with a role action wich has only 20% on a 90 sec cooldown. however, WHM got buffed on other skills.

Yeah this one kinda isn't a nerf since they balanced it out with other things WHM got which made it even better actually.