I prefer Teresa Inquisitor because of her aura, besides I am already making Lucille into Inquisitor for that invulnerable shield, so I have no need for AB Teresa in my lineup. You can make AB Teresa and AB Lucille (when you get one) if you prefer.
For guardian its strictly Kratos or Zeus only for me, Hercules DEF is way too low to be considered, and that is especially true for HD when her skillset is all about DEF.
In that regard, does Luthor even play any other role as a healer then? Lucille and Teresa seems to be much better. Thanks for helping out btw, appreciate it very much.
Just like Inquisitor Teresa and Inquisitor Lucille, Archbishop Luthor and Archbishop Lucille work the same way. To me the class is the best healer in the arena. You have high chance of winning if the enemy wasted turn trying to burst someone down and he got heal back to full with buff. The same thing applies when you fight against one, you have to decide very carefully which unit to focus on or waste your precious turn trying. 5 turn CD does matter when every turn counts.
One of the usage of no-trigger passive healing aura is for your team to build up skill CD before proceeding to the next stage, so I consider every healer with such aura decent in pve. When it comes down to active skill, usually the party heal is better though.
Anyway all that is just personal perspective, others can always prove otherwise.