So what if it makes WHM do more damage than the others, in the unlikely event that it does? Scholar and Astro regularly outdamage WHM by a hilarious margin, and if Assize somehow ends up tipping that balance it won't matter because every single time WHM has any material advantage over the other healers, no matter how small, ever, they bitch and moan that the more complex healers "deserve" to be more powerful, and they get buffed into being directly superior choices by the next minor patch.