I don't think you press less button as whm than SCH
Since the whm must use many cooldown that the SCH doesn't

The thing is as whm you're alone in the heal/DPS balance
While the SCH got an indépendant unit to support him in this
But the big difference is that scholar is prediction/prevention while whm is reaction

And remember
A healer do not heal his team, he keep them alive while dancing wih them in the battle