This somwhat reminds me of Soul Edge vs Soul Calibur honestly, soul calibur claims it seems to be goodness and light while soul edge is viewed as and acts like evil and darkness.

In the end they /both/ turn out to be dangerous body possessing villians that needed to be destroyed. It's possible that we are being used and it has been said that if we knew the whole truth the scions and ascians would not be enemies.. I would not be surprised if Minfilia becomes a host for the dying mother crystal, it might very well mean she could become an unwilling villian sometime in the future..