Most overpowered job in frontlines?

[Gallus]

You can't kill a regen buff though.

R.I.P EOS

True. But if the WHM is disabled in any sort of way (sleep, stun, silence, etc.) unless you've precasted a regen or a medica II you are not healing anything while you are disrupted. Disrupting the SCH is however less effective, EOS will keep healing. So what you gain from one side you lose it from the other.

[UlricCraft]

People don't keep Medica II 100% uptime? Madness!

I agree with what you say though.
It's easier to pin down a White Mage and stop overall healing, but when your CC wears off, a White Mage has a lot more kit to peel away from aggressors. (And like you said, precasting, <yes please>)

eventually the WHM runs out of mana due to offhealing the SCH DPS pressure. The SCH wins.

Mana Draw, Shroud of Saints? I've never run out of mana. D:

It's a silly argument to debate a 1v1 WHM vs SCH in the current PVP environment.
Though I do wonder how deadly a combo could either pull off to almost execute the other...

Aero, Aero II (in this order) repose, let the DoTs tick until 4 seconds on sleep, pre-cast Holy, followed by Stone II and Fluid Aura!

Come at me, SCH.

[Rydia13]

I don't think any job is overpowered, I believe some are just naturally more annoying than others.
As SMN, I really do not see what everyone's talking about how hard it is to kill SCH. If you kill Eos, possibly twice due to SC, then the SCH is cake. I think WHM are waaaay harder to kill.
Some dude mentioned that melee can kill anyone 1v1...Healers are top dogs at one on one so it's not even worth the time to fight them, although personally as SMN I feel fairly confident fighting SCHs.
Also did everyone suddenly forgot that SCHs main source of damage is pretty void when it comes to fighting a whm.. Esuna > DoTs. Even Regen > DoTs. I think WHM vs SCH is like the FFXI equivalent of RDM vs RDM in where the match could go on for days without a victor.
The most annoying job for me as a SMN main is BRD hands down. It's not to say I can't slay them 1v1 cuz I always do, but in group battles when I'm tryna kill the SCH but can't cast cuz of the BRD spamming me, it gets pretty annoying.