DeletedUser
lets face it you may as well ask how many licks does it take to get to the center of a tootsie pop.
We have a similar question this side of the Atlantic: "What the hell is a tootsie pop?!"
But personally I have never noticed any change, but I suppose that their probably is some kind of benefit. I doubt they would have bothered including prayer if it does nothing.
Then again, there is also a chance that in a future update, Prayer will become more useful.