Easy there. It may be hard to tell while healing heroics with a cloth tank and one hand tied behind your back, but healers have situations, not rotations. There is absolutely no way that you can tell by his/her post what spells should have been used in those groups.
OP: it looks like CoW could scale much better with gear but yeah, to my play style, it feels like something that's too situational right now. Not gonna lie though, the only time I've played Disc in the past is when it's so OP that Holy wasn't a justifiable option to the raid.