Do you know how many times I run Titan HM DF a day? Or look for PF groups doing Titan on my SCH? This is not just an issue where you think I've seen it a couple times and have misjudged WHMs completely: this occurs quite frequently.
I am almost always stuck solo healing post heart because the other healer ends up dead.
The stoneskin in the beginning is actually just a waste of time and a crutch: similar to building LB. If you need to build LB on Titan, you are not ready for Titan. If you need to stoneskin pre-pull on Titan, your healers are not ready for Titan. It's really as simple as that.
We never were discussing solo healing Titan HM. If I wanted a class to solo heal Titan HM, I'd take a SCH over a WHM due to all the issues you just brought up (which are really non-issues for most competent WHMs).
Yes solo healing WHM draws massive aggro when you play it like trash just like how my Eos draws massive aggro when I use a rouse'd whispering dawn when the party is already near full HP. The overhealing generates a crap ton of aggro. Same for medica 2.
It isn't a hard issue. SCHs deal with it by splitting threat between the fairy and themselves. WHM have this lovely ability called shroud which serves two purposes.
My alt's WHM is actually 50. I heal, on my SCH, with competent WHMs who have no issues with threat and don't stoneskin pre-pull because they realize it isn't needed on Titan.
I list a crap ton of fights where I think stoneskin pre-pull is worth it and ones where it isn't. Titan is not one of them.
I don't think stoneskin pre-pull is all useless: I think on certain fights it is, though.
Stating that you think SCHs don't have to deal with mana issues or threat is hilarious. Get YOUR SCH to 50 before talking about healing from a SCH PoV. Meanwhile, my WHM alt and SCH main will continue to heal DF Titan HM without incident.
This is the point we're trying to get through your thick skull: that MP is irrelevant. If you are running into MP issues on either healer, you have certain things to look at:Except for the fact that you effectively just wasted 1000 MP vs waiting a mere 24 seconds to cast SS on everyone before the fight for 0 MP.
1) People are dying and you are having to res frequently (not a healer issue)
2) You are bad and spamming AoE heals when you don't need to be
3) You are shrouding when you shouldn't be, wasting mana regeneration because you pulled hate spamming medica like a dolt instead of letting the other healer pick up the slack
Edit: Why am I not surprised? Half the WHMs who have posted in this thread have done nothing relevant in terms of endgame healing.