Definitely not, I believe the jobs were Warrior (mastered) and Monk, and it was on a single target.
So i've only been able to replicate this myself on a very high ng character, someone else i've seen using freya also heals more than the damage they deal, and you. Nothing we have in common other than freya. I wasn't able to replicate this on ng 0 though so maybe the ng cycle has something to do with it, what cycle are you on currently? I think it's due to defence, lancet heal scales with the attack stat itself and not damage dealt. So as you get to the higher ng the damage you deal is reduced by defence but the heal will remain consistent. This is just speculation though, i am just a fan of the bot not a creator.