Just like how titan and coil shows that warrior is inferior to paladin . Coil and titan show that sch is inferior to whm atm.
Aoe wise
Whm gets a 200 potency heal that applies a 100 potency regen(total regen potency 500) overall 700potency which is both preemptive and great healing
Along with a 300 potency aoe heal as a burst heal
Sch get a 150 potency heal with a 150 potency shield which is a preemptive heal. Sch don't get another reliable aoe heal even we should have a burst aoe heal since it is an essential tool.
Schs option to deal with aoe damage is preemptive succor >cast succor and instant succor 150+150 +150+150=for 3 spell casts 600 potency healed +150hp temp shield left on target. Which means sch needs to cast moar suckers to do the same amount of hp healing as whm.
Whm option to deal with aoe is preemptive medica 2 >cast medica and instant medica 200+500 +300+300=For 3 spell cast 1300 potency healed (then straight back to tank healing!)
Whm can regen and chain cast cure 2 on a tank for great tank healing. Oh shit heals are benediction and instant cure3.
Sch cannot chain aql since there is often overlap in shielding thus wasting potency so they must physick>aql>physick>aql etc. Lustrate and instant physick is our ohshit heal.
The faerie isn't as reliable when it comes to tank healing (read my previous post to see why)due to conflicting gcd timers(3 second vs 2.4), not being controlled while casting and occasionally healing someone else so being unable to direct the heal to tank. so often the sch healing rotation works like this.
sch rotation aql=600,physick=400,embrace=250
Aql>physick>embrace>Aql>physick>Aql>physick>embrace=3500(+250 if you manage to get off another embrace) potency over 10 seconds. So basically sch needs too add lustrate to its rotation to keep up. Lustrate is the only thing keeping sch from being unviable(to some extent).
whm rotation regen=150(total 450 for 3 ticks) cure 2=650 potency
Regen>cure2>cure2>cure2>cure2>cure2>cure2=4350 potency over 10 seconds . Whm is just so reliable healing compared to sch. In titan/coil you want reliable and burst healing which whm offers.
Whm can also just instant 20 yard medica 2 for 700 raid healing and go back to tank healing compared sch who can instant 15 yard succor for 150 raid healing+150 shield.
There is also the fact whm can use its divine seal,regen and POM smartly to buff their healing output whenever they need it Whereas Sch's faerie just wastes its cool-downs.
I prefer Sch for easy farm-mode dungeons and ifrit/garuda . But when it comes to actual serious business content whm reliability and output makes them the clear choice. Similar to warrior and how warrior is so damn self sufficient in easy mode dungeons but they are a joke compared to paladins in coil.
Hopefully we see changes soon for pet ai and to bring up sch's aoe healing/stacking up a tad. At least there should be some changes in 2.1.