I am a bit confused by this ability,
I am playing a mm hunter in arena, with exhilaration + ghyph of animal bond (10% increase to all healing received)
The only problem I have is that I heal a lot less then I should if i get 25% healing debuff, does the warrior have extra healing debuff by another ability or by a glyph that I don't know about because the healing reduction is close to 50% there not 25%
http://imgur.com/lvduQn7 - link to screenshot.
If my math is right I should get 93,822 healing not 65,678
PS in that arena he was playing with a holy paladin.