Eyonix Explains the Difference

So, what is the difference between Pallies and Blood Knights? A couple of spells and the in-game lore text. Otherwise they're exactly the same.

Oh, at another note. A friend of mine said that at ComiCon he got to hear that Blood Knights will effectively get a spell that increases the damage (or something like that) of the Judgements. It would be called "Blood Sacrifice" or something similar. Sounds feasible.