The funny part is that this nerf to paladins is actually a buff to disc priests. So it completely negated our nerf because we absorb more now.
Everything I've heard indicates that our Atonement nerf was negated by our Atonement buff (that is, we gained effectiveness because it's acting more like a smart spell and less like a "I only call myself smart" spell).
I'd also hesitate to say that we absorb more now. This is only going to be true if (a) the Disc Priest was raiding trivial content with a Holy Paladin, (b) the Disc Priest was raiding content with multiple Holy Paladins, and/or (c) the Disc Priest was not also raiding with other Disc Priests.