I've put together an excel chart that calculates healing stats with respect to adjustable focus parameters and AAs. The spells covered are 65-70 spells for druids, clerics, shamans, paladins, rangers and beastlords.

The adjustable parameters are:
- Healing focus percent and level
- Mana preservation percent and level
- Beneficial spell haste percent and level
- Beneficial spell haste buff and level
- SCM level
- Specialize Alteration level
- Healing adept AAs
- Healing gift AAs.

At the bottom of the chart there's also a CHC duration calculator where CH and KR can be compared under adjustable mana regeneration conditions.

The default settings for all parameters are the best end-game foci and max AAs.

The chart: http://w1.185.telia.com/~u18515646/Healing.xls

Sneak peak screenshot of the chart if you don't have excel: http://w1.185.telia.com/~u18515646/Healing.jpg

My original motivation for the chart was to compare KR with our fast heals. I suspected that KR was no longer more efficient than our fast heals, and this is indeed true. A rather hillarious observation I've made is that ranger/beastlord blast heals do more heal-per-second than KR. Ranger/bst heals are quite inefficient so I wouldn't worry too much about that, though.