In the video in the mod that plays when a "crusade" is called and at the end it is Warrior Priest vs Bloodthirster who do you think won? The video can be found here http://www.youtube.com/watch?v=DDZ47fvEG9c
I vote Warrior Priest because if its not everyday you see a giant beam from the sky empower someone. If he is worth the trouble to Sigmar he will win. On a side note, what in Sigmars name happend to the Shadow Warrior who saved the Warrior Priest? I am guessing he was crushed but there are possibilities. Oh and why would he bother to help the Warrior Priest?