To be clear, this is a spell DAMAGE shield. Those who want some healing and some magic damage, might choose this. I really don't know how much of a nuker a paladin can be, so I can't comment on which is better.... I can comment on how well a shaman can nuke. :)

Dear god! if people think its a better healing shield then felstone bulwark they should just delete there accounts now, but one thing if felstone bulwark hasnt dropped, i guess you can use it for a healing shield but only if they have nothing better