I'm basing my argument on the small amount of tests that have already been done, the Rune of Power Aurora is about the same as Emperium Aurora as far as damage-wise and HP-wise, I wore a Rune with 2 skolls, f. set, and I believe 0~1 Tao, and it gave me more HP then when I was wearing Emperium Aurora, so it has the capacity to surpass Emperium Aurora in the one advantage we thought it had.
My argument is more based on the impact I think it will have on Emperium Aurora, an item which should be more powerful IMO than an item that you can get for donating, not on what affect it will have on PvP. (Ex. from the past; Fallen Ghost, Rune of Power Aurora is just similar to Emperium Aurora in respect to what they do)