As I read the parse, the effect increases a Paladin's heals by 40% and gives them an additional damage proc for one minute. The wording of the parse is vague, but if you look at Packmaster's Curse (the AE on Keldovan that reduces heals by 80%) the parse is "3: Set Healing Effectiveness to -80%" (note the -80% vs. 40% or +40% here).
Don't forget that parsers such as Lucy are reading raw data and converting it into another format. This is probably NOT how the information actually appears in Sony's file, but rather is how the author of the parsing tool decided to code the tool to print out the translation. It's like how the poor translation of an old Japanese video game gave us "All your base are belong to us!" That isn't how it actually reads in Japanese, but rather how it was poorly translated into English.
Edited, Sep 8th 2007 7:14am by Yular
Edited, Sep 8th 2007 7:15am by Yular