You seem to be missing the datamined change to DA, which is what my entire post is referring to... The healing "nerf" that I referred to: currently, when a spell crits, we receive 200% of the original heal, plus 50% of the original heal as DA. The datamined change is that we no longer get the extra 100% heal, and it is instead funneled entirely to DA.
Example: You cast a 100k Greater Heal. It crits on live for a 200k heal plus a 50k absorb (ignoring mastery at this point). With the datamined change - you cast a 100k Greater Heal that crits, and you get 100k healing and 100k in absorbs.