Prophecy:

23 int
10 spi
13 stam
7 SR
+9 healing

Overall stats in a 10 minute fight:
230 mana
.38% to crit w/ spells
130 life
~1 mana per second while recharging (assuming no down time to recharge)
+9 healing = ~3000 extra healing (assuming 35 flash heals per minute)

This:

11 int
5 stam
+26 healing
3 mana/5sec

Overall stats for this over a 10 minute fight:
110 mana
3 mana/5sec = 360 extra mana
470 extra mana overall (assuming no down time to recharge)
50 life
.18% to crit w/ spells
+26 healing = ~9000 extra healing

So if you go with Prophecy you are loosing mana and healing in the end. If you go with this set of shoulders you loose shadow resist, life, armor and .2% crit w/ spells in the end. Each have some unique pluses and minuses.

A main point that you need to consider when comparing prophecy to anything, though, is it's set bonuses. At 3 pieces your flash heal casting time goes down -0.1, which nicely increases your HPS (healing per second); at 5 pieces you get an addition 2% for your holy spells; your prayer of heailng crit goes up 25%! So yeah, if the shoulders are your only piece of prophecy then this is more worth it, but otherwise prophecy outweighs this.

I personally, am gonna go for these with my druid ;).