This right here is all the proof anyone needs to show how wrong you are. SGE doesn't play any differently than any of the other healers. It's not required to Heal to keep up its DPS any more than any of the other healers are. It's in the exact same ballpark as WHM in terms of needing to use their Lillies to sustain because its MP economy is entirely locked behind Addersgal abilities which only enforces overhealing instead of smart healing and if that's the design that SE is going for, Healers are in an even worst position for it.