I read this sentence "Certainly when her DPS is compared to other Support Heroes she can seem a little wanting, and she can't self-heal herself either - it's strictly a one-way route for this ability."
and that's not complete right. Mercy does self-heal her own, when she doesn't take damage, by her own. I couldn't find anything about that in the guide. But in my opinion it's something very important to know, if you play Mercy. So you may look over the text again and add the point to it.^^
Posted in Overwatch: Mercy guide