Well, that may be, but you're not rotating those every time like a DPS player do.

I have a saying, "if you play your healer as if he was a DPS, you're doing it wrong". Healers don't have "rotations", simply because our gameplay is reactive. We are given a bunch of tools (weak heals, strong heals, HoTs, emergency heals), and it's up to us to adjust and adapt which skills we'll be using at any given moment.